Car Problem Reports

Buick Park Avenue Intake Manifold Gaskets Can Develop Engine Oil Leaks

Buick Park Avenue Problem
51 Reports
Me Too

Model Years Affected: 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005

Engines Affected: 3.8L V6, 3.8L V6 Supercharged, 4.2L 6 Cylinder

Average Mileage: 128,404 mi (81,000 mi - 203,000 mi)


The intake manifold gasket may develop external engine oil and/or coolant leak. The intake manifold will need to be removed and the gasket replaced to correct this issue.

  • mjhindman, , 3.8L V6 Supercharged, 125,000 mi

    Just picked up my buick yesterday 7/27/2013. 960.00. replaced intake manifold gasket and head gasket. drove sixty miles. almost maded it home. car runs mildly hot...not even 3/4 on temp gauge. turned off ac and turned on heat. gauge started to cool, then engine ran rough. pulled into gas station. car will not crank. what is causing the manifold to fail? thermostat? I read oil pump? anyone, anyone? waiting on mechanic to pick up car today and have a do over

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  • Visitor, , 3.8L V6, 119,000 mi

    antifreeze and oil is near my engine compartment and car wont start!

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  • Visitor, , 3.8L V6 Supercharged

    Intake Manifold gasket failed, developed a leak - as indicated by coolant pooling on manifold. This leak was very slow, and I had no driveability issues, but finally took care of it.
    If this happens to you - have the mechanic check your oil pump as well, since the gasket material can degrade into your engine coolant and "sludge" up the pump, screens, etc. in your oil system...I am dealing with this right now.

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  • craig c, , 3.8L V6, 107,000 mi

    wht smoke from exhaust will not stay running once i take foot off gas pedal oil ontop of engine by fuel injectors. antifreeze n oil oil drips on garage floor

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  • Visitor, , 3.8L V6, 81,000 mi

    coolant leaking around on to manifold and possibly oil as well.

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  • Visitor, , 3.8L V6, 131,000 mi

    Was loosing coolant slowly, every few days but couldn't find a leak. Took to repair shop who showed me leak in front of rear cylinder bank where the upper manifold gasket was leaking. I got All-Data repair info and fixed myself saving hundreds of dollars. Now my water pump has developed a leak due to my changing coolant from DexCool to green after flushing it well. A Firestone dealer told me the DexCool does contain better lubricating oils for the water pump and that once you go to green normal extended life coolant the pump may well leak within 9-12 months, exactly what happened.

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  • Visitor, , 4.2L 6 Cylinder, 100,000 mi

    Coolant pouring out from under car & heater stopped working due to low fluid level. Thought to be water pump but after further inspection turns out to be manifold intake gaskets.

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  • Visitor, , 3.8L V6, 125,000 mi

    starting loosing antifreeze in oil, overheated and white smoke started coming out of pipe. Replace upper intake gasket, problem resolved.

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  • Visitor, , 3.8L V6, 83,000 mi

    When i got a tune up this year 2014,my mechanic told me about the gaskets need to be replace,haven't fixed yet because of money issues.

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  • n2violin, , 3.8L V6 Supercharged, 98,000 mi

    I never had a clear sign that there was any overheating occurring, my 2003 Park Ave. Ultra just stopped at an intersection. The only indication I had was that the temp. gauge was inching up a little over halfway to "H". No light indicators, no "check engine light" on. One thing I should have noticed was the smell of antifreeze. I had been smelling it for perhaps a month, but always thought it was someone else's car. Car cut off at intersection when waiting for the light to change. Wouldn't crank except for one time to allow me to get it out of the intersection. Mechanic found coolant stains on the engine and no more coolant in the overflow tank. Machanics replaced manifold intake and thought it was fixed, but it cut off at the shop when they tested it before I came to retrieve it. Replaced the MAP (Mass Airflow sensor) and the mechanics say that it is fixed now and runs well without cutting off. The test will be in the running for the rest of the week! They also replaced the fuel filter and the temperature gauge. All at the tune of about $1,300.

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