Part 1 HERE! Oil in the Radiator! Top End Internal Tear Down! GM 3800 3100 3400 3.8 #mechanic https://youtu.be/A_MSlMsaZgU
Part 2 HERE! Top End Assembly, Lower Intake Reseal 2002 Pontiac Firebird Gm 3800 3.8l https://youtu.be/XSHZspMoHtw
Take care of your engine's oiling system with premium synthetic Amsoil Engine Oil!
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This is a 2002 Pontiac Firebird with the GM 3.8l 3800 Series II Engine. This vehicle came in with an large oil leak on the engine and an oily substance in the radiator. The antifreeze was mixing with engine oil. The problem is common with this series of engine. The lower intake manifold gaskets deteriorate and case coolant to leak into the engine oil, oil is also allowed to contaminate the cooling system resulting in the fouled coolant and soft radiator hoses. This is multi part repair and is somewhat difficult in this particular car due the firewall and wiper cowl location. We will remove the intake plenum and lower manifold valve covers, and the engine accessories such as alternator, belt, and the tensioner. In this case the belt tensioner also has a heater core bypass built into it so there is engine coolant in the belt tensioner as well. Part one will be the teardown, part two will be engine assembly and the final part will miscellaneous assembly, fluids, cleaning and final inspection. This video is part three of this series. As mentioned in the video this vehicle was featured before due to catastrophic A/C system failure. See links below for all past A/C videos.
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Part 1! About to EXPLODE! Pistons Coming Apart Pontiac Firebird! https://youtu.be/-sR2_tNhY6M
Part 2! Compressor Damage took out the whole System | Pontiac Firebird Camaro S-10 Buick https://youtu.be/4N1UsUrjQAI
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99 thoughts on “Lower intake manifold leak-final assembly! oil in coolant gm 3.8l 3800 series ii engine #repair”
  1. Avataaar/Circle Created with python_avatars @delantel6689 says:

    Nice video series Ray as always

  2. Avataaar/Circle Created with python_avatars @bobdufresne6294 says:

    Ray ignore the BG haters!😂

  3. Avataaar/Circle Created with python_avatars @johndavis4767 says:

    Love your videos. Coolant vs water. The liquid in the radiator is put there to cool the engine. Water works well as a coolant but causes corrosion and freezes in cold climates so antifreeze is added to the water. So, it is okay to call the water in the radiator coolant even if there is no antifreeze added. Technically antifreeze is not coolant until it is put in the radiator.

  4. Avataaar/Circle Created with python_avatars @TairnKA says:

    What! that don't look like a Fiero to me? 😉

  5. Avataaar/Circle Created with python_avatars @sniperlif3 says:

    A car where an owner cares is amazing to see. While I don't care for the bird or similar car, this car looks great and you have to give the owner props for taking care of a car. It is not normal for someone to care for their car like this owner does. I try to.

  6. Avataaar/Circle Created with python_avatars @CPR9969 says:

    I love strut bars, i get one for every car that I get. My car states 5w30, I use 10w30 in the summer and 5w30 in the winter here in quebec, canada.

  7. Avataaar/Circle Created with python_avatars @kell8603 says:

    Pop-eye likes spin-age…

  8. Avataaar/Circle Created with python_avatars @kell8603 says:

    I like the squirrel commentary… 🙂

  9. Avataaar/Circle Created with python_avatars @brianporter4352 says:

    This has been a very interesting series of videos on this engine. I don't want to know what the cost of this repair would be, but thinking in the thousands. I did own a 99' Buick Regal with the supercharged 3800 series 2 engine. What a phenomenal powertrain, smooth and quite fuel efficient too. I really beat the hell out of it, so I didn't have it very long- about 8 years. Oh well, thanks for the vids keep em coming.

  10. Avataaar/Circle Created with python_avatars @ronniefrantzen2397 says:

    I'm so glad the "reee" got explained. I've been wondering forever!

  11. Avataaar/Circle Created with python_avatars @mikeciavarella316 says:

    Ray is the red bar touching the alternator?

  12. Avataaar/Circle Created with python_avatars @jasongregware1453 says:

    Well hello from Michigan then….lol Love the videos!!

  13. Avataaar/Circle Created with python_avatars @ionbeam14 says:

    Hands down the GREATEST MOTOR EVER!! The GM 3800 Series-3. Mine is in a 2009 Buick LaCrosse. It was the last year for the 3800 in the Buick LaCrosse. It is an unstoppable work horse and parts have an average price of less than $100.00 and are sold everywhere!

  14. Avataaar/Circle Created with python_avatars @aaronbritt2025 says:

    You got it backwards, Ray. If you were somewhere cold, you'd want a 5W-30. 10W-30 is better for warmer climates.

  15. Avataaar/Circle Created with python_avatars @jessewynne8193 says:

    Fiero??? Huh ray I think it’s break time? It’s been a long day? Do u mean fire bird? Or trans am?
    That body style is similar to both.

  16. Avataaar/Circle Created with python_avatars Hola! @paulgaerisch7041 says:

    Ray, is it your opinion that it’s ok to spray water on a warm engine? I would like to clean my engine but I’ve always been told not to spray cold water on a hot engine. I trust your advice on this. Thanks.

  17. Avataaar/Circle Created with python_avatars @bubbles_brains9937 says:

    Glad to see that solvent tank working!

  18. Avataaar/Circle Created with python_avatars @TheJuggalo1491 says:

    You ever look at Rock Auto for hard to find parts.

  19. Avataaar/Circle Created with python_avatars @charleskadletc2431 says:

    Agree with Pat. I'm a FORD guy, always will be.

  20. Avataaar/Circle Created with python_avatars @BxCornw says:

    Man I'm in Louisiana wish I could get you to work on my 2006 envoy…inline 6 motor..ac blower motor won't turn off..even after removing key…and my main harness has splices because a rat chewed through most of it and that's just caused a plethora of issues

  21. Avataaar/Circle Created with python_avatars @user-kr9mh5oi1q says:

    I was going to ask how it changed from brown to amber. That strut bar talk helped a lot of people trying to use a crowbar or strap. That is a purdy car AND NEVER DRIVE A CAR IN THE RAIN

  22. Avataaar/Circle Created with python_avatars @mtbmilkman says:

    This customer will be a lifelong customer and more than likely everyone they talk too.

  23. Avataaar/Circle Created with python_avatars @ginog5037 says:

    Ray, did you use an evacuator or the drain plug for the extra oil? The sensors and electrical connectors don't like water. Playing with fire, introducing corrosion…

  24. Avataaar/Circle Created with python_avatars @truckabob says:

    Still a sell out

  25. Avataaar/Circle Created with python_avatars @ginobragoli1448 says:

    That heater hose /tension assembly is such a bad design! Who in their right mind designs plastic clip in hoses? thinking that they will not leak🤷

  26. Avataaar/Circle Created with python_avatars @duaneramacher955 says:

    my 1998 Dodge Dakota had 5w-30 put in my 318 at a local shop and with in a week the hydraulic lifters started talking to me, I had to drain the oil pan and put 10W-30 and in, a short time the lifters quitted down . The lifters didn't like the 5W-30.

  27. Avataaar/Circle Created with python_avatars @boristhegerman says:

    GNX? Oh damn nm! 😂

  28. Avataaar/Circle Created with python_avatars @thomasswalley1075 says:

    A lighter oil should improve mileage, slightly.

  29. Avataaar/Circle Created with python_avatars @gwcracker says:

    You can bs the fans but not the players… shill.

  30. Avataaar/Circle Created with python_avatars @juliusliles5828 says:

    REEE, Ray has the chipmunks all jacked up on Mountain Dew. It's critter abuse! 🐿

  31. Avataaar/Circle Created with python_avatars @bigbstacks6696 says:

    Nice job!!

  32. Avataaar/Circle Created with python_avatars @THEDRAGONBOOSTER8 says:

    Great job Ray..

  33. Avataaar/Circle Created with python_avatars @onewayt says:

    I’ve found a whole lot more of those funky clamps leaking than I’ve ever seen with the screw bands

  34. Avataaar/Circle Created with python_avatars @traceyk6541 says:

    YAAAAAAAARRRG, you splashed water in my monitor eyeeeees….😡

  35. Avataaar/Circle Created with python_avatars @cousinfuzzy4544 says:

    So now every time Ray sprays water on a running engine he reeeeeeelives that one guys comment

  36. Avataaar/Circle Created with python_avatars @graken22 says:

    In my opinion BG products are the BEST I have have ever used!, esp. the intake cleaner. Great job Ray!

  37. Avataaar/Circle Created with python_avatars @timothymcewen7507 says:

    CRITICAL STEP NOT SHOWN OR NOT IN THE VIDEO??? Gotta ask… you went through the process to reseal the intake/lower etc. But I have an old school I would have done way before adding either oil or a coolant flush…I did not see you perform a pressure test of the system to verify the intake gaskets/seal was verified.
    TO me it seems a critical step, especially when oil/coolant mix is deep within the block and drips on the floor is only one indicator. I have done about a dozen similar head/intake gasket replacements and have been bitten more than once.
    As I said, just asking…

  38. Avataaar/Circle Created with python_avatars @jackkreighbaum783 says:

    Not to be critical, but did you finish tightening that bolt behind the "nator"?

  39. Avataaar/Circle Created with python_avatars @orinmangar2333 says:

    Ray, you have said you are not an engineer, so you should put the proper weight oil into the engine. That said, you don't know more than the engineer. Period. If that was my vehicle, I would make you put the correct viscosity oil in, whether you liked it or not!!!!

  40. Avataaar/Circle Created with python_avatars @eduardoflores2510 says:

    PSA

  41. Avataaar/Circle Created with python_avatars @michelswerissen6544 says:

    Video approved no gravity, click.

  42. Avataaar/Circle Created with python_avatars @bobbg9041 says:

    Didn't they used to make an acid flush i guise if you didn't have anything else you could dump a gallon of vinegar in it with water
    Vinegar works pretty good at desolveing oil plus you car would smell like a fresh salad!

  43. Avataaar/Circle Created with python_avatars @Lowbubba says:

    Thanks for donating your toothbrush to the parts washer.

  44. Avataaar/Circle Created with python_avatars @Ragnarok3rd says:

    Id like to see you work on a 05 or later Grand Prix GT…

  45. Avataaar/Circle Created with python_avatars @jdbarney says:

    This Ferrari-bird is going to have an identity crisis. Today Ray called it a Fiero!

  46. Avataaar/Circle Created with python_avatars @ahoytheremate1954 says:

    Ray speaking of advertising you tube made me watch 4mins.30seconds of advertising on car stuff before i watched your vid i hope you are making money for these adverts mate or you are being robbed

  47. Avataaar/Circle Created with python_avatars @dnclark79 says:

    I notice you withheld the required calibration of the modial phase inducers. For shame, sir!

  48. Avataaar/Circle Created with python_avatars @markmalikowski4971 says:

    Love it when you go Chipmunk mode.

  49. Avataaar/Circle Created with python_avatars @garyrendano4717 says:

    wow. if my mechanic put those plastic crap in my car..i would FIRE HIM.. theyh do not last 12 years.. i know. i have a 2001 pontiac grand prix GTP.. those fail fast. and leave you walking.. i would have waited for you to order them from another state.. and wait a few days for the haslte of haveing to reinstall those in a few months to 2 years … PATHETIC this really PISSED ME off.

  50. Avataaar/Circle Created with python_avatars @chaddelong6795 says:

    We haven’t had an “impact gun cam” in a long while hoping to see a ANOTHA soon 😂

  51. Avataaar/Circle Created with python_avatars @bobbg9041 says:

    We missed ya, i hope you got some well earned R&R rest andc recouprate because 2 days in a row hunched over that motor in the frt trunk had to be a pain in both the back and neck.

  52. Avataaar/Circle Created with python_avatars @ahoytheremate1954 says:

    Ray 1 of the best engines GMH, General Motors Holden Aussie was the 253 cub inch motor was a bullet proof motor and very economic on fuel at the time mate, cheers

  53. Avataaar/Circle Created with python_avatars @ericwalstrand3512 says:

    Wife Unit needs to quit worrying about mandatory appearances and post some new video on her channel.

  54. Avataaar/Circle Created with python_avatars @MrMoon275 says:

    I laugh and look forward to when you say rrrrrrréeeeeeeee 😅

  55. Avataaar/Circle Created with python_avatars @kirkthejerkthe1st says:

    A Fiero with the popular front engine swap?

  56. Avataaar/Circle Created with python_avatars @bobbg9041 says:

    Speed up Ray sounds like Chipmunk! Love it. Do you think Alvin will let him in the band?

  57. Avataaar/Circle Created with python_avatars @lzed223 says:

    At 29 minutes wasn't there a good drip coming off the pulley during start up ?

  58. Avataaar/Circle Created with python_avatars @martyh9309 says:

    You'd want the 5w in the northern states for cold weather starting. The 5w is the equivalent viscosity of a straight weight at 32degF and the 30 is the equivalent straight weight viscosity at 212degF.

  59. Avataaar/Circle Created with python_avatars @LesReeves says:

    Here in Australia they put that 3800 Buick V6 in the GM-H products from 89 to 96 & they are still going without much repair work required the water pump & alternator are in different positions most likely why they do not suffer like that Fire bird.(Probably the best engine built by GM).

  60. Avataaar/Circle Created with python_avatars @danr1920 says:

    So why didn't GM build all their engines this good? This a serious question.

  61. Avataaar/Circle Created with python_avatars @sixstrings24 says:

    Opinions are like assholes. Everyone's got one and they all stink

  62. Avataaar/Circle Created with python_avatars @HouseCallAutoRepair says:

    2002 Pontiac Fiero??? No post production fix?

  63. Avataaar/Circle Created with python_avatars @DainSmart-vm7pc says:

    👍🏻🇬🇧💂🏻

  64. Avataaar/Circle Created with python_avatars @greggc.touftree5936 says:

    Hey Ray I'm scared.
    Are you trying to get a job I thought you were independent now? I'm going indie too in my profession and if you have to go back to daddy corpo I'm getting wet feet. I heard you were talking to Mavis.

  65. Avataaar/Circle Created with python_avatars @OldFatBubba says:

    That's a pretty ride that seems well maintained. I bet its owner really loves it.

  66. Avataaar/Circle Created with python_avatars @user-bc8rr7pl8c says:

    I sorry to ask this now a while ago u had a gm ac Schrader valve socket can u tell me the info.

    I have been watching since your dealership days

  67. Avataaar/Circle Created with python_avatars @Moose-rq8gv says:

    What if he goes to Michigan not being a pest just wantin to learn

  68. Avataaar/Circle Created with python_avatars @TheMaster1 says:

    So REEEEEEEE

  69. Avataaar/Circle Created with python_avatars @user-tp8nl5cq5n says:

    OMGOSH you actually used a parts washer 😮

  70. Avataaar/Circle Created with python_avatars @lokigames5091 says:

    3.1,3.4,3.8s I beleive are some of GMs best engines. When I was a kid I had a 92 Grand Prix for like 10 years by time I had to get rid of it it had over 400k on the thing but I live in Michigan so the car became unsafe.

  71. Avataaar/Circle Created with python_avatars @moparmikesms2774 says:

    Brings back memories. Did a RH Cyl Head /and new Intake gaskets on my 2000 Firebird 3800. 2 weeks later A/C Compressor replacement. All tight fits!!

  72. Avataaar/Circle Created with python_avatars @scotkudron9537 says:

    Was the stabilizer bar a factory part or aftermarket?

  73. Avataaar/Circle Created with python_avatars @jerrymalone8370 says:

    Ray, can you recommend a decent obd2 scanner that plots data?

  74. Avataaar/Circle Created with python_avatars @michaelslattery2121 says:

    I thought reeeeeee was for reeeeee-action in the comments.

  75. Avataaar/Circle Created with python_avatars @AlureanQueen says:

    I have a 1998 Buick Riviera with the supercharged 3800 Series II V6. It had 140,000 miles on it when I bought it in the summer of 2011, today it has 280,000+, still runs like a dream. Have kept up with all maintenance, swore loudly at the GM engineers who parked a motor mount right in the middle of the main serpentine belt. My dream is to someday go on a cross country trip, place it in the loving, knowledgeable hands of Ray, and pick it at some later time when all the humorous glitches, it has have been chased away, and maybe fresh paint from the shop that did the big, gorgeous, now Silveryado grey paint. One can dream, right? Greetings Ray, Lauren, and kid units, from the snowy Northwest. 😊

  76. Avataaar/Circle Created with python_avatars @felgercarb3803 says:

    Just use 5W-40 in every petrol engine and you will be fine

  77. Avataaar/Circle Created with python_avatars @johnny234511 says:

    I have this engine in a Buick Lesabre Limited 1997, and they are indestructible! One of the best 5 engine ever made, except for that coolant thing with it. I love my car and this engine! From Montréal, Québec. No my car do not have northern rust. I do not drive it in winter.

  78. Avataaar/Circle Created with python_avatars @dcwarr14 says:

    Black and tan oil.

  79. Avataaar/Circle Created with python_avatars @whattheheck1959 says:

    Did we ever check to see what sin is under that duck tape?

  80. Avataaar/Circle Created with python_avatars @davidclemdis4796 says:

    My God; I can just imagine how much oil is in that cars entire cooling system, The oil just clinging to the walls of the engine, every nook and cranny and port. and the radiator. would take some serious flushing.😮

  81. Avataaar/Circle Created with python_avatars @lysanderlysandrou5715 says:

    The Alvin and the chipmunks fast forward method 😂😂😂😂

  82. Avataaar/Circle Created with python_avatars @t-bear1863 says:

    5/16 cause the 8 doesn't fit? yer a nut

  83. Avataaar/Circle Created with python_avatars @lloydweems6237 says:

    Those hose clamps will leave you with a fingernail bruise that will last for a while. Ask me how I know!

  84. Avataaar/Circle Created with python_avatars @milwaukeeroadjim9253 says:

    We want more Wife Unit in the shop. Ray, I agree with everything you did on/to this car. I had a 99 Grand Prix with the 3.8. Loved that car.

  85. Avataaar/Circle Created with python_avatars @job38four10 says:

    If my car I'd want to drive it 50 miles with cleaner in system, then drain and do it again………..

  86. Avataaar/Circle Created with python_avatars @daniel.s.stefanov says:

    That was a great video, I feel my soul purifying as I see that nasty shit bubbling out of the radiator. BTW can we get more brakes jobs? Those are my favorite!

  87. Avataaar/Circle Created with python_avatars @davesouthword1298 says:

    Was wondering about the benefits of a strut bar, and there it is with a simple demonstration. Bravo! However if I get one for my car, I don’t think I’ll use an old handrail!

  88. Avataaar/Circle Created with python_avatars @DogAteMyPopcorn says:

    That poor car is having an identity crisis. Now it's a Pontiac Fiero?

  89. Avataaar/Circle Created with python_avatars @jimdavis6833 says:

    Ray, actually the only opinion on the oil weight that counts is the owner's.

  90. Avataaar/Circle Created with python_avatars @erikvdo says:

    You called it a Fiero. Might as well have called it a Ford Tempo.

  91. Avataaar/Circle Created with python_avatars @josephhaenel5725 says:

    In the words of Vice Grip Garage, " bring the thunder."

  92. Avataaar/Circle Created with python_avatars @davevaught9023 says:

    Great series of videos,thanks for proving the strut bar I put one on my 2016 5.7 challenger and some people said I was waisting my money.

  93. Avataaar/Circle Created with python_avatars @JamesTrigg says:

    over the years , I have had 2 cars fitted with this engine model, Holden VS Berlina and a VY2 Commodore . both reliable, strong and good touring cars , easier to access than the Firebird

  94. Avataaar/Circle Created with python_avatars @DonaldWells-wk8dc says:

    Ill send you a BG rattlesnake from Arizona😁

  95. Avataaar/Circle Created with python_avatars @bigsparky8888 says:

    HIGH GRADE HELIUM RAY…😊

  96. Avataaar/Circle Created with python_avatars @Butchcub75 says:

    did you say Fiero? lol. a fiero with a 3800 is fun, howmany drain and fills did you do?

  97. Avataaar/Circle Created with python_avatars @RickHamouris says:

    Yes… I DID notice you not zip tying that wire back up… ya got me LOL… minireee

  98. Avataaar/Circle Created with python_avatars @TransAm-Jack says:

    Just wondering what happened to that bracket on the back of the pass side head that you had so much trouble removing

  99. Avataaar/Circle Created with python_avatars @lloydanderson3271 says:

    Love the editing on this one Ray!!😊

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