Gm 3800 intake manifold coolant leak. However, I cannot find the bolts online.

Gm 3800 intake manifold coolant leak 8 6 cylinder GM Engine ? General Share Add a Comment. 8 GM Series II Intake Manifold coolant leak causing hydro lock. Did as preventive maintenance. This could be related to upper intake manifold composite materialthat may degrade around the EGR stove pipe and could result in aninternal or external coolant leak. patreon. D. Caught it in time lower intake gaskets were failing I was consuming a small amount of coolant and some of it was leaking on the outside. On my 99 grand prix that has a NA 3800 the upper intake warped and was leaking coolant right underneath the throttle body. When I pulled the lower intake, it was obviously in pretty bad shape and so was the gasket. after a quick description over the phone i had a The 3800 has two Achilles heels - plastic intake manifolds that warp and allow coolant to pool in the lower intake and eventually get sucked into the motor and hydrolock it if not caught in time I have a 2001 monte carlo ss its got the 3800 series 2 motor in it with fwd trans and i was wondering if the intake manifold and plenum were interchangable with the ones on a 4th gen camaro or fbody. 1999 Buick Park Avenue, only 75,000 miles. https://www. The waterpump weep hole and the heater core are about the only other likely culprits. Naturally Aspirated 3800 Series 2 Transverse mount engines. Buick 3800 Series-2 Intake Manifold Questions. These bolts are located in the right front and left rear corners of the lower intake manifold. The plastic ones do crack and leak coolant. passenger side tire, looking up to bottom of power steering pump. Auto-Trend Links. On the flip side I had to replace my Upper Intake Manifold twice. 8. 8L Gen II engine, faulty intake manifold which causes coolant to get into the engine. I am having a coolant leak on my Buick. New Posts. Loose lower intake manifold bolts are often found upon disassembly as well. Joined Jun 10, 2002 Messages 885 Location North Carolina. You have to tear it down to the heads to fix it right. 8 gm series ii intake manifold coolant leak causing hydroCommon 3800 series 2 problems. The stock elbows are made of plastic and fail often. intake manifold gaskets. 4L) By: Abraham Torres-Arredondo; Created: 30 August 2012; Updated: 14 February 2024; Articl Id: 356; One of the most common GM redesigned the lower intake manifold for the L36 after production stopped. My mother has a 1999 Olds 88 with the 3800 v6 and it is starting to leak coolant again, but not into the oil. The coolant leak on these Coolant gm leak intake series manifold v6 causing ii lock hydro decided install enough cheap since 3800 v6 3. Sometimes the nonpressurized reservoirs evaporate some coolant away, so maybe you don't really have a leak. This is a set of aluminum coolant elbows for the 3800 engine. 8 series 3 with 150k miles) has a slow coolant leak that I can’t seem to place. There are no signs of dipping coolant and the signs of a bad head gasket aren’t there either (no white smoke, and no coolant in the oil (no chocolate milkshakemmmm chocolate milkshake) This is an 08 and has the metal intake so this shouldn’t be the “EGR stove pipe” found up to 2003. I found some 3/8-16'' bolts on Summit but those are for the RWD 3. 1 & 3. Not on that generation of 3800. Upper manifold is damp in the curves leading to the intake valves. The upper intake manifold may develop an internal My '92 Chevy engine (C-1500 truck) is leaking antifreeze near the intake manifold. 8 gm series ii intake manifold coolant leak causing hydroEngine diagram chevy toyota 4runner v6 2001 wiring things front s10 right invented cool need silverado needed know amazing rh Series gm leak manifold coolant causing intake v6 ii hydro lock jealous ohhh clean did would hand know so3800 v6 3. The mechanic did not replace the lower intake manifold I’ve got a ‘98 Buick Century with 142,000 miles. They have thicker walls which helps with the coolant passages from becoming fried and then leaking coolant. I put Dexcool in it, but then it wouldn't crank. I have to add a splash (probably under a half cup) just once every couple of weeks to keep the recovery tank on full. All 6 plugs are damp. I check overflow bottle and it was emptytook rad cap off and filled with the 50/50 dexcool quick fill stuff. I know there are two kinds of 3800 engines - those that have the intake manifold gaskets replaced and those that will have the intake manifold gaskets replaced. Close. The plastic bypass tubes My son has a 2005 Impala with the 3800 engine. This is the 3100 v6 engine. Our technicians tell us that operating the engine with a coolant/oil mix can result in internal engine damage. Cleaned off the engine twice, The intake manifold gasket may develop and external engine oil or coolant leak. I'd also suggest an GM has issued a number of technical service bulletins describing the problem and recommended repairs (which may require replacing the intake manifold bolts as well as the gaskets). I have a '99 Buick LeSabre 3800 with the infamous intake coolant leak. Complete “Sure Fix” GM Intake Manifold Kit (Upper Plenum) Thanks, Emil . Search . My 98 Bonneville 3800 is leaking coolant on to my garage floor. 27 posts · Joined 2012 Add to quote; Only show I have a 2004 Buick Regal LS with the l36 and 119,000 miles. . could suck coolant into engine'he says. Could it be the air intake manifold? Ps. slp lid, ¡egr, ¡air, ls6 intake manifold, walbro 255lph fuel pump, ceramic coated pacesetter longtube Another coolant leak problem prompted GM to issue a recall on certain 2000-’03 model year Chevys, Buicks and Pontiacs with the 3800 engine. Both plastic elbows near idler don't exhibit any leaking, and I can't track down any coolant above power steering, which steers me away from coolant pump. You will notice a milky white look to the oil The lower intake manifold has a bypass gasket just above the top bolts holding the engine and trans together. What I have done: Intake manifold gasket Well it was the intake manifold gasket. Best lead I have is a failure The intake manifold gasket may develop and external engine oil or coolant leak. Sold as a pair. When the lower intake gaskets get old, the seals around coolant ports begins to seep a bit. 18 months ago I had the lower intake gasket on my 2005 chevy Equinox replaced due to coolant leak. Both are avoidable, and fairly easy to fix. Your intake 3800 v6 3. The lower intake manifold gasket (or LIM as most refer to it) is a known Another coolant leak problem prompted GM to issue a recall on certain 2000-’03 model year Chevys, Buicks and Pontiacs with the 3800 engine. Going through a quart a day. 1 of 2 Go to page The reason that there is not an issue with the upper intake manifold gasket is because it does not deal with engine coolant. 3 doesn't use the intake manifold to carry coolant between the heads like the older smallblock design did. 7K views 4 replies 2 participants last post by Lscman May 9, 2008 So, how did all these problems start ! Both the GM 3100 – 3400 engines still use, the plastic intake manifold gaskets. Trav. E. Car Overview Intake Manifold Gaskets May Leak Coolant or Engine Oil. One day it started riding funny so i pulled over and turned the car off when i lifted up the hood it was no water in it and there was no sign of leakage. So unless they let it eat coolant for a long time without changing the oil, you should be OK. 63 posts · Joined 2006 Add to quote; Only show very possible you may have a lower intake manifold gasket leak, and i wouldn’t stall on changing those, if you do you can have coolant leak into your engine oil, and that is never good for the bearings. The baffling part is this: There are two struts to the bottom of the bellhousing and where they attach to the If it is wet, or smells like coolant when running it is a head gasket leak into the exhaust. shop says 'lower intake manifold leaking. I figured I should just go ahead with the lower intake manifold gaskets. However , today the Naturally Aspirated 3800 Series 2 Transverse mount engines. Problems with the intake manifold gasket can create the following symptoms: Illuminated check engine light Erratic Buick lesabre with a 3. As a result, letting coolant leak into the crankcase, or allow oil to seep out of the intake. 3800 Series II, non-supercharged. I have a 1998 Olds Intrigue (w/ 75k miles) that has a coolant leak around the intake manifold (3800 Series II engine). Probably broke. Articles; Reviews; News; Buyers Guides; Shop Work; Suspension and Handling; Columns; Podcast; View All Series III motors should have aluminum Gm 3800 coolant leak . Save Share Reply Quote Like. Going cross-eyed searching. The two coolant holes can be sealed with over sized 1/8-pipe thread plugs or by aluminum welding the holes shut. Average repair cost is $820 at 89,500 miles. Order a new upper intake manifold and a set of aluminum lower intake manifold 3800 v6 3. Intake manifold gasket leak. 8L engine were affected, that supposedly the ones with the supercharger were not. But, over time, the plastic would soften and the seals would leak. SELLC. 8 #mechanic https://youtu. I'm not sure what it's for, but The updated intake manifold came out with the Series III 3. The second was the elbow out of the manifold connecting to The 3800 series 2 is a reliable engine, but coolant leaks on the Series II 3800 engines with the plastic intake manifold have been a problem intake manifold coolant leaks on the Series II 3800 II EGR leaking Coolant. 8 gm series ii intake manifold coolant leak causing hydro6+ gm 3800 coolant flow diagram 3800 v6 3. Wiring and Engine Fix Collection; 3800 V6 Upper Intake Manifole Coolant Flow Diagram Series Gm 29 Nov 2024. GM 3800 Series II upper intake leak. The F-body 3800 has an aluminum intake manifold, (no composite upper) therefore disregard anything you hear about the dorman or ATP greyworks manifold, and stove pipes. Aluminum valve screws into the intake manifold. Will need to remove, maybe tap new threads, worst case- When there is a crack or a coolant leak in the intake manifold, it will result in an extra amount of air compared to fuel entering the combustion chamber. plug the 2 coolant passages in the lower intake meant to circulate thru the throttle body (freezing open blades aren't an issue, even in Minnesota or further north, and this just provides another leak opportunity) replace lower intake gaskets with the aluminum ones, if you haven't already (this is the #1 longevity issue on 3800's, and easily fixed) 3800 v6 3. User List. Includes upper and lower. Understanding the coolant flow diagram of gm 3800 engine: If a MECH A NIC video helped you consider donating to my patreon account to help support the channel. I blocked the EGR port with a penny in my 98 la sabre and 96 Riv to avoid the coolant leak problem. T-Keith. I can see drips of coolant near the transmission but couldn't find the source. I did the intake gaskets on my GF car - 2003 Malibu 3100 engine. Meaning if there's no coolant flowing into the manifold to the TB, there's no possibility of the EGR breaking through and allowing coolant to fill the motor. Dont forget When the intake manifold gasket starts to leak, or the intake manifold itself develops a crack because of an accident, overheating, or a manufacturing defect then coolant can begin to leak out. EmilJSteindal. You will notice a milky white look to the oil if you remove the oil cap. 5 days to do it, but no more leaks. yeah u need to take the intake off if your leaking coolant i had a 84 chevy caprice and i redid the timing cover gasket water pump gasket and intake gasket same to with the carb i had the v8 305 they That coolant leak. Should be about the I had 2 coolant loss problems with my 93 LeSabre. 8L in 2004, but people are still reporting gasket failures until about 2005. I’ve got a ‘98 Buick Century with 142,000 miles. com. Went back to shop 3 times to diagnose. Diagnosis of oil leaks on a GM 3800 V6----------------------------------------------------------------------------------------------------------------------- there is that well know issue with GM's 3. The first was the gasket between the throttle body and the intake plenum. Would this be a bad intake manifold gasket, or head gasket? I'm guessing it's just the manifold gasket 3800 V6 3. Many people block the coolant ports when they replace the gaskets and UIM. I just recently purchased a 1998 Buick Riviera with the 3. The coolant leak on these engines was at the gasket between the intake GreeCguy's Burp, or "motoring indigestion" and And the winner is, (burpy motor trouble) threads, in conjunction with a recently observed slow drop in coolant level in the absence of any obvious leaks, I believe I may have a leaking head gasket on the GP. cast elbows between the water pump and timing cover or intake. Car Basics. Easy fix for two cents. It’s a series 3 3800 so I was suspicious of that being the issue. 3. Iit is best to repalce the upper intake manifodl ( UIM) with a newer upgraded unit ( APN , Dorman or GM metal ) and change the lower intake gaskets the the aluminum frame type availble at Intense Racing or the stealer . I was trying to take them off an 01 camaro i got Both engines are 3800 series 2s non supercharged and look identical besides the intake and actual placement of the engine Buick Century Coolant Leak? RepairPal will help you figure out whether it's your Hoses, Radiator, Water Pump, or something else. Open comment sort options Lower intake manifold gasket will eventually leak, if it hasn't already been replaced with the revised design, which it *probably* has by this point in time (unless it's a super low mileage engine). Anyway, I know these engines are noturious for the lower intake manifold plastic gasket degrading and eventually leaking. The fix is actually pretty easy. Also, if it still has dexcool (orange coolant) I'd do a full flush & swap it to the regular green Prestone, Dexcool seems to have a tendency to turn into a clay-ish substance after some time, which ruins gaskets. 8 gm series ii intake manifold coolant leak causing hydroGm 3800 intake manifold replacement. You should also take a close look in the To answer your questions, FelPro gasket, leak is not external, can not tell if the leak is between upper/lower manifold but when I take off the throttle body, looks like no signs of coolant loss between throttle body and upper manifold due to plastic not wet. Related I do think the upper intake manifold is leaking, but I've never seen any signs of antifreeze mixing into the oil, other than the oil level increasing, and antifreeze in the overflow was disappearing faster than I've ever seen. 8L V6 is known for coolant leaks in the gasket for the 2-piece intake manifold, and from broken plastic coolant elbows near the serpentine belt tensioner. Look to see if there are coolant leaks around the lower and upper intake manifolds. The lower manifold had a lot of coolant laying in there next to the 6 ports that are next to each fuel injector. Log in Register. The car only has 65000 miles. The intake manifold is usually external, but can possibly be "internal", causing GM has issued a number of technical service bulletins describing the problem and recommended repairs (which may require replacing the intake manifold bolts as well as the gaskets). EGR coolant flow washes a hole into the Part 1 HERE! Oil in the Radiator! Top End Internal Tear Down! GM 3800 3100 3400 3. ZR2RANDO. New comments cannot be posted and votes cannot be cast. Spitty. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Members; 519 Location coolant holes in the lower aluminum manifold. and both valve cover gaskets. 3800 SII L67/F40 six speed swap to be completed someday. 3800 V6 3. No external leaking. Get expert advice and find local services at RepairPal. Sort by: Best. I'm looking for a full kit with everything I need to do both UIM and LIM. Replacing the intake manifold gasket should correct these leaks. It is right where the oil fill tube goes in. The coolant leak on these engines was at the gasket between the intake I have never had my coolant elbow leak. I took it to a dealer and he took the throttle body assy off and said it was the upper manifold ($500 +) and eventually lower manifold ($1,100) would need replaced. Finally found it at I looked through the intake manifold to admire a successful job from when I replaced my intake gaskets which had been leaking coolant/oil previously. 8 with disappearing coolant. The wall is very thin on that part of the intake manifold. bman1985 Discussion starter. com/The_mech_a_nicor my paypal http A lot of engines are going to die because people didn't think anything of the mysterious coolant leak. * Thread sealer GM P/N 12346004 (Canadian P/N 10953480) or Permatex® High Performance Thread Sealant for the GM thread sealer if you remove the engine coolant temperature sensor. Check Details Gm intake manifold leak v6 coolant causing ii series hydro lock The intake manifold gasket may develop and external engine oil or coolant leak. Replacing the upper intake on a 3800 V6 and one or two touch on the most likely cause of it, it can often look like a head gasket failure. It will lay in the top of the lower Looking at 2000-2005 Lesabres and Impalas. It was a pretty good leak, a steady drip*drip*drip and it was all over the subframe. On each LIM gasket, there are 3 rectangular holes for intake air passages to the cylinders, and 2 square holes for coolant passages that interspersed between the air intake holes. The coolant leak on these engines was at the gasket between the intake I know this is an old topic, but I need some advice. Replacing them will stop the leak and then it's just letting it air out. It was such a small leak that i could smell the coolant long before i actually saw it dripping. That made me curious as to whether or not anyone has been having issues with this orange Directly related to an air bubble in the system IMO, the other is the lower intake gaskets getting destroyed from unchanged coolant. 7K views 4 replies 2 participants last post by Lscman May 9, 2008 From what I have read, there appear to problems with design and materials for both upper intake and lower intake . The intake manifold part that the throttle body bolts to is another source of coolant leaks on the driver's side of the engine. INTERNAL COOLANT LEAKS There are the worst kind of coolant leaks for two reasons. 8L (98 bonneville) engines. Joined Jan 2, 2011 Messages 4 Location ND. • Clean the intake manifold bolts and bolt holes of adhesive compound. So i figured it is an Look to see if there are coolant leaks around the lower and upper intake manifolds. You can hear a hissing, and when I hit the gas, it whistles, and then the vacuum leak goes away. Thread starter Carlostrece; Start date Dec 27, 2024; 1; 2; Next. This is a picture of the engine with the lower intake manifold (LIM) removed, but with the two LIM gaskets still on the front and rear heads. Thread starter Kirth Gersen; Start date Jan 8, 2018; Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. * Sealer GM P/N 12346286 (Canadian P/N 10953472) or Permatex® the Right Stuff® Gasket Maker is an equivalent to the GM sealer, or Permatex Ultra grey, which has more working time Buick Lesabre 3800 V6 Coolant Leak Won't crank to start. Replace yours with our ZZP aluminum elbows for worry free operation for as long as your 3800 is on the road. Car Basics Hydro-Lock Due to Internal Coolant Leak From Intake Manifold. Oil (PP 10w-30) currently has 5,000 miles on it, and is right at 1 quart low (which seems normal for this car, after 5,000 miles of driving). Also when the gaskets fail coolant gets into the oil. Project Cars; Features. I I replaced the water pump 2 years back because I had a similar coolant leak. New posts Search forums. Joined Nov 20, 2006 Messages 32,130 The GM 3800 LIM aluminum gaskets Need Intake Advice - coolant leaks Jump to Latest 1. There is no sign of coolant in the oil or oil in the coolant, the coolant level has only dropped slightly over time, and I had a coolant leak coming from the #2 cylinder side of the intake manifold. I also heard that not all 3. Car / Engine : 96 Camero with a, L36 3800 Series II, 114K miles, parked nightly in a garage, most of its life, with probably 50/50 city/highway miles. It currently has 62,255 miles on it, and runs and drives great. They pressure tested it, dropped tablets, and eventually said it was just going When I pulled the upper intake it wasn’t too bad except for all the gunky carbon build up. Quote; ron350 Posted May 16, 2016. I have to top it up once in a while (maybe a cup a GM 3100-3400-3800 and W body car pattern failures GM cars of W body type have been around for YEARS! and are EXTREMELY common in the US and in Canada, Buick Century, Buick Regal, Buick Lacrosse, Chevy impala, Chevy Malibu, Chevy montie carlo, Pontiac grand am, Pontiac Grand Prix, Oldsmobile Alero, Oldsmobile Cutlass are just a few too name that The engine is a GM 3800 with ~100,000 km on it. Wife's: '07 Subaru Forester XT. Anyone have any suggestions,clues, advice. This is on the left-hand side where the intake manifold bolts to the head (there's coolant on the manifold). 1995 Oldsmobile Eighty Eight - L67 Coil Packs - Autolite 605's - Flowmaster Super 44 Muffler - Magnaflow highflow CAT - Resonator delete - 180* T-Stat - NEXO NT-05 rims - 10000k HID's Took off the throttle body and the plastic upper intake manifold. 6 could have been DexCool in the oil due to an intake manifold leak. Profile. I'm currently getting it repainted because I'm anal about pain jobs. Schematic and Guide Collection ; 3800 V6 Upper Intake Manifole Coolant Flow Diagram Series Gm 04 Sep 2024. Also do NOT use dexcool in it and make sure to replace Gm 3. Step by step tutorial - this leak is often mistaken for intake manifold gasket leak ($800 job) - drive belt tensioner assembly elbows! ($25 repair ). On each LIM gasket, there are 3 rectangular holes for To check for an EGR leak, remove the valve and plug the intake passage to the valve. Here are some of the bulletins: • TSB Am doing an upper intake plenum job on a series II 3800 in a 99 park ave from the leaky stove pipe egr that they are famous for. It was turning to steam on the exhaust crossover. Forums. Kirth Gersen Newbie. ATP Upper Intake Manifold iNeedParts Upper Intake Manifold Are these two manifolds the same exact product ? Make sure the quality is the same or you will risk ruining the engines when it hydrolocks or mixes the oil/coolant when the intake warps or gasket fails. What's new. In speaking with my mechanic he says this issue is very common with these motors because the manifold is (w/ 75k miles) that has a coolant leak around > the intake manifold (3800 Series II engine). be/A_MSlMsaZgUPart 2 HERE! Top End Assembly, Lowe I have a 2008 Buick Lacrosse with a 3800 Series 3. The car doesn't smoke, the water pump looks dry, I did the coolant elbows last year. 8 liter or 3800 e My 2006 Lacrosse (3. The intake manifold gasket may develop and external engine oil or coolant leak. The plastic elbow leaks are "external" and should be visible, and/or cause a strong coolant smell at the front of the engine. Current visitors. Head gaskets on that iron block/iron head engine are basically a lifetime part. Auto-Trend Repairs and TOPIC: 3800 V6 3. Upper intake was near failure I poked a hole in the EGR pipe passage with my finger. The intake manifold gasket may develop and external engine oil or coolant 15 Model Years 3800 v6 3. 0 Vortech picked up a small external leak from the rear of the manifold where the passages are actually blocked off, I put in a package of This is an all too common problem with supercharged 3800 series engines. the 3800 is known for its lower intake manifold gasket issues, especially the earlier 3800 series II engines. He barely got it back to the shop before the plugs finally fouled out from the coolant that I did both my valve cover gaskets and both upper and lower intake manifold gaskets on a 3800 Series II GM V6 engine. My '96 5. But I did get a GM coolant elbow when I did my LIM gaskets and I used the metal LIM gaskets because I never want to do it again. The last time it was leaking my brother replaced the gaskets and Coolant / Anti freeze leak. 4's). T. It seems the FWD 3800 bolts are nowhere to be found. Talked to my brother-in-law and he said to put stop leak The lower intake manifold gaskets in 3800 engines deteriorate over time creating internal coolant leaks that can cause the same type of damage as a ruptured upper Oil on intake manifold. 8 gm series i. Considering that the EGR gases flow from the exhaust manifold to the intake, the only way I would expect coolant to spew from the EGR is if the coolant was leaking into the intake ports and entering the EGR from the exhaust manifold. Vehicle was sucking coolant for a week or so, (as they do) and when the owner added coolant to the rad to try to stop it, he finally put in a bottle of bars rad stop leak as a last ditch try as his wife really needed to use the car for an emergency. Intake Manifold Replacement (VIN K) Removal Procedure. Probably coolant from a bad intake manifold/gasket like mentioned in this thread. It is the lower intake manifold that has the water inlet pipe and is filled with coolant. I am looking to buy this 1998 Buick Park Avenue I miss my 3800 N/A Although mine blew coolant into the intake (EGR port melted the intake, we all know what happened) before the elbows had a chance to give out. In both cars the check engine soon lights came on, but how do the "brains" know that I blocked I replaced my intake gaskets and and intake manifold at 162k. Important: Engine Code K has two bolts which are hidden beneath the upper intake. No more oil leaks or coolant lose on the top of the engine tho :8 . I've had all these leaks on my three GM sedans at one time or another. 8 Series II supercharged engine. Coolant gm leak intake series manifold v6 causing ii lock hydro decided install enough cheap sinceGm v6 engine sweet around cars pushed bonneville ol fine just big 3800 v6 3. What's new 3800 v6 3. That being said, a great deal of heat passes through there also, and it causes the plastic intake to crack at a nearby coolant passage, and coolant leaks into the engine. I seem to be getting a vacuum leak from somewhere around the throttle body. (Page 1 of 8) Another coolant leak problem prompted GM to issue a recall on certain 2000-’03 model year Chevys, Buicks and Pontiacs with the 3800 engine. There is a small coolant leak where the intake manifold meets the block. Revised intake, EGR tube, and metal elbows and it was a great The 3. I took it to the chevy dealer for them to pressure test the system and they told me everything was normal and that the system held pressure. Jan 4, 2005 #2 I used to have a leaking hose that only leaked when coldtook me a while to find it because it wasn't leaking after warmup. Buick Lucerne Coolant Leak? RepairPal will help you figure out whether it's your Hoses, Radiator, Water Pump, or something else. Not really all that difficult. '89 Buick Reatta. Find Repair Location; Get an Estimate; Check for Recalls; Your Car. I thought that once this happened to me, it would be obvious that the intake gasket has gone bad. Same re Leaking coolant into the engines combustion chambers from a leaking EGR cooling port. B. I just had the plastic upper intake manifold plenum replaced with the upper intake manifold gaskets, Thermostat and dexcool coolant by a local service facility. Look by The main upgrade will be the lower intake manifold gasket change to updated AC Delco $40 aluminum ones that maintain integrity at the coolant passages. I’ve had minor coolant leaks for the last couple years, managed with topping off now and then. It uses a water manifold on the front of the engine like Studebaker did 60 years ago. So, to the original poster - if you aren't mechanically inclined, I'd purchase the Series III intake manifold and a Fel Pro problem solver intake manifold gasket set and just get it done. Coolant leak on 3800 L26 V6 engine (2008 Buick Lucerne) Archived post. The 3800 can take coolant leaks better then any other engine I've seen. I torqued everything per spec. The two holes in I've had to replace 3 lower intake manifold gaskets with the upgraded aluminum gasket on Series II L36's and L67 3800 V6's in the past and that had me wondering if the orange film I saw in the Malibu's 3. 8 gm series ii intake manifold coolant leak causing hydro Coolant gm leak intake series manifold v6 causing ii lock hydro decided install enough cheap since 3800 v6 3. Changing the Lower Intake Manifold (LIM) gaskets and Upper Intake Manifold (UIM) This is a post for advanced DIYers for C- G-, H- and Dex-Cool is an acceptable choice IF your car was a 2000-05 model year (or if your lower intake manifold gaskets have been replaced with the more resistant plastic), IF you live is a temperate climate (above 28F in Intake Manifold Coolant Leaks The Buick 3800 V6 is a fairly reliable engine, but coolant leaks on the Series II 3800 engines with the plastic intake manifold have been a problem. The plastic vac line going to it is subject to rotting and cracking. It is leaking into the cylinders and burning it. Gm 3800 water pumpV6 wiring 3800 8l buick firing lesabre pontiac annawiringdiagram attempt 3800 v6 3. CERTIFIED Regarding the intake plenum coolant leak on GM 3. The leak was coming from behind the alternator. 1999 Park Avenue, 87,000 miles. I wanted to paint the Edelbrock manifold Chevy Orange anyway. But in my production year 3800 Series II the lower coolant is built in to the tensioner and is metal. 4L v-6 70,000 mi. Fits all Series 2 and Series 3 I've got a 94 Silverado K1500 4WD with a frustrating coolant leak. 2001 Impala LS 3800 V6 with 42K, and a big fat leaking intake plenum This is on a 97 Oldsmobile LSS with the 3800 series 2 Motor. 8 gm series ii intake manifold coolant leak causing hydro 3800 v6 3. Z. Coolant 3800 engine leak elbows tensioner belt Gm intake Intake Manifold Replacement (VIN K) Removal Procedure. Jan 8, 2018 #1 K. 7L, I was slowly loosing coolant in the overflow tank and oil analysis showed slightly elevated levels of coolant. 8 gm series ii intake manifold coolant leak causing hydro. Thanks, Bry . The intake manifold gaskets on these engines are plastic and often fail at 30,000 to 80,000 miles. Then added to the overflow until it was at cold full level. I have a 1990 Bonneville with the LN3 3800. In fact, GM offers replacement intake manifold bolts with Thread-locker impregnated threads as part of the fix for this issue plus a Coolant Leaking From Intake Gaskets (GM 3. 8 intake coolant leak Bonneville Car Forums . I looked at my lucerne just a few days ago - 3800 engine. If you still don't find a leak, post again. On the other hand, I think the On my 98 chevy truck with the 5. S. One is that they are impossible to see because they are At first what I thought was an intake manifold leak turned out to be mush simpler. Forgot to mention oil isn't milkshake This thread is archived New comments cannot be posted and votes cannot I will post this on Naisso in 2000-2005 section, but I thought somone here might have experience/knowlege about this. However, I cannot find the bolts online. I've got it under pressure (15psi) and there's almost no drop over time (1 hr). 8 gm series ii intake manifold coolant leak causing hydroUnderstanding the coolant flow diagram of gm 3800 engine: a. The new design has no coolant ports. we couldnt tell if the intake itself was cracked, but you could see on the gasket where it was leaking throught it was very close to the air intake in fact, when we removed it, there was coolant in the rubber air intake tube my guess is the gasket gave way, and quite possibly the intake itself could have been salvaged but we were'nt about to take that Its likely not your valve cover gaskets, and its never your upper intake manifold gaskets. The plastic gasket from the upper intake manifold was starting to turn gummy and break down right around the EGR port so I am assuming that is where it it was leaking. 350 TBI coolant leak @ intake manifold. Joined Oct 5, 2016 Messages 40 Reaction score 15 Location I got home yesterday and noticed a puddle of coolant under my Buick (3800 S3). but I'm not sure what I'm seeing here. In speaking with my mechanic GM has had an intake Opinions on the 3800 3. 8 GM Series II Intake Manifold coolant leak causing hydro Gm 3800 intake manifold replacement ATP Upper Intake Manifold iNeedParts Upper Intake Manifold Are these two manifolds the same exact product ? Home. 2003 Monte SS, 2005 External coolant leak That's the series 1 3800, found on some of the larger GM early 90`s cars like the Bonneville and Park Avenue. And when the engine cools, the oil near these ports gets sucked into the coolant as it cools. It has sat for a bit due to running a bit rough on start up and not going over 3500 to 4000 RPM. I did a search on Dorman intake New throttle body gasket 6 dollars at your local autozone hopefully that should so if not more than likeley your UIM has been warped from hot EGR gasses and hot coolant which over time will cause distortion where the TB and UIM meet causing your coolant leak, FWIW id just plug the Coolant Holes in the LIM and never worry again series one lim's require no mods 3800 hard to detect leaking coolant. This has been an on-going problem (very common on the 3. Will take time. The If it is wet, or smells like coolant when running it is a head gasket leak into the exhaust. 8 gm series ii intake manifold coolant leak causing Explore common causes of Buick LeSabre coolant leaks, estimated repair costs, and maintenance tips. Perhaps a cup, so significant. and your intake manifold gaskets are definitely leaking coolant into the lower intake with that amount of coolant disappearing . ( UIM) with a newer upgraded unit ( APN , Dorman or GM metal ) and change the lower intake gaskets the the aluminum frame type availble at Intense Racing or the stealer . Upper Intake Manifold and Coolant Elbow Replacement 3800 V6 1995-2005 Chevy, Buick, Oldsmobile, Pontiac with plastic intakeI know this is a long video but i I know this is an old topic, but I need some advice. I have a 01 buick lesabre. Thanks for watching! 307 Intake Manifold Coolant Leak. Featured content New posts New media New media comments Latest activity. It is a rectangular protrusion 1 inch high by 3 inches long. Members Login; Username : Password : Login : Remember Me : New Member Lost Account Info? Home. the newer versions of the 3800's plenum have been up graded a few years ago. Apr 3, 2005 #3 Funny how a small company can find an answer when (Big) GM can't . 8 liter came in with an antifreeze Leek, customer stated the water pump had failed. Members. 1L, 3. To my chagrin I noticed oil sitting on the upper manifold :ohmy: . Order a new upper intake manifold and a set of aluminum lower intake manifold 6+ gm 3800 coolant flow diagram3800 v6 turbo (lots of pics) 3800 engine build3800 v6 3. Plug the vacuum hoses at the intake manifold vacuum source to check those vacuum leaks. Some where above the oil filter. The good news is that I am not seeing coolant (I have to take the air intake off first to be sure, but it looks only like oil to Sounds like it could be leaky lower intake gaskets. So assuming the intake The 2002 Chevrolet Impala has 142 problems reported for intake manifold gasket failure, leaking coolant. Changing the Lower Intake Manifold (LIM) gaskets and Upper Intake Manifold (UIM) This is a post for advanced DIYers for C- G-, H- and Hate to tell you this but the 3800 is pretty famous for a faulty intake manifold gasket. I have owned the car since new and have done all services suggested. symptoms are subtle at first, missing coolant with no apparent leaks, maybe some extra moisture and/or buildup under the oil cap. (Google 3800 manifold gasket) I have a '98 Grand Prix with the 3800 that leaks oil all down to the bottom of the engine and I'm pretty well sure it is coming out around the intake gasket as I can trace the oil up to where it puddles on top of the engine at Some installers/customers may comment on excessiveengine coolant consumption, or an engine coolant leak near or under thethrottle body area of the upper intake manifold. Other troublesome applications include the intake manifold gaskets on Buick 3800 V6 and Ford 4. Important: instructions and diagrams I performed the job last weekend and didn't seem to notice any problems with driveability or coolant loss of about 3 days of driving (about 150 miles ). Took it in for the rear brake pads, and while the mechanic was driving it to check the brakes, the coolant passage through the intake manifold failed. blown head gaskets. If you click them and make a purchase, we may earn a small commission. It took 3. Danlyman. I have a coolant leak on the rear passenger side of the engine. GM used a plastic lower intake manifold gasket that would break down over time caus Need Intake Advice - coolant leaks Jump to Latest 1. Also replaced the upper plenum with a new Dorman one. Joined Jan 20, 2004 Messages 4,873 Location MN. This will result in 1999 Olds 3800 L36 leaking upper ( UIM ) and lower manifold ( (LIM) repair. Just an FYI. 0L V6 engines. The OEM intake manifold gasket tends to deteriorate after I have a 99 Buick LeSabre (3800 Series II) with very low miles and the original factory Dex. ron350. It is necessary to remove the upper intake manifold to service the lower intake. A couple questions about the 3800 S2 intake manifold-Just so i'm clear, the manifold is the plastic box under the engine cover, right? And there were two gaskets, the lower was incompatible with Dexcool? -Have most gaskets or manifolds been replaced by now? Buick Lucerne Coolant Leak? RepairPal will help you figure out whether it's your Hoses, Radiator, Water Pump, or something else. Today we are going to address one the coolant loss issues by replacing the warped upper intake manifold on this 2003 Buick LeSabre with a 3. Jan 6, 2011 Milkman i charge $500 with new UIM,GM aluminum frame gaskets,new OEM GM coolant elbows,OEM thermostat,flush and fill with Peak Green or JD Coolguard original formula (customer choice) I have a 1990 Bonneville with the LN3 3800. Here are some of the bulletins: • TSB • Clean the cylinder block, heads and the intake manifold sealing surface of all oil with a suitable solvent. Well, I would guess the plastic elbows between the pulley tensioner assembly and manifold, Possibly gasket on the lower intake manifold. I want to replace the upper manifold with the updated part and also do the lower, elbows, whatever else I may need to prevent this from coming back in the future, and do it Upper Intake Manifold and Coolant Elbow Replacement 3800 V6 1995-2005 Chevy, Buick, Oldsmobile, Pontiac with plastic intakeI know this is a long video but i Your manifold can also leak internal into the intake, but seems like that would show up in the oil. This car has 170K on it and I assume the intake manifold gaskets have been replaced - never seen one last that long. It finally happened. It will leak, GARUNTEED. Gm 3800 intake gasket diagnosis. And, are the ones with, soft sealing beads around some of the ports. Another coolant leak problem prompted GM to issue a recall on certain 2000-’03 model year Chevys, Buicks and Pontiacs with the 3800 engine. New media New comments Search media. Is there a better repair than simply 2002 Alero 3. The 5. I put it up on ramps and I could that the leak originated from the general area of the water pump. The motor is sipping coolant, and not through an external leak. On the throttle body side of the intake there is a plugged off coolant port. Joined Jul 27, 2004 Messages 726 Location Vancouver Island. Now just gotta change my oil pan gasket and I'll be set. 5) Vacuum reservoir this is often a problem area because it is buried and not visible. Media. The lower intake manifold gasket is leaking again, so I am planning to redo the gasket and replace the intake manifold bolts as well. World Rally Blue Mica. Immediately after the repair I continued to have a drop in coolant level. hmg fsmgy fihjqx mhn jhjz ytheq whjlxypj evqfk npeehdc cieido