Car Problem Reports

Buick Park Avenue Intake Manifold Gaskets Can Develop Engine Oil Leaks

Buick Park Avenue Problem
45 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: 130,383 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.

  • Visitor, , 3.8L V6, 119,000 mi

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

    Flag This
  • 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.

    Flag This
  • 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

    Flag This
  • 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.

    Flag This
  • 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

    Flag This
  • 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.

    Flag This
  • Visitor, , 3.8L V6, 81,000 mi

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

    Flag This
  • Visitor, , 3.8L V6, 108,000 mi

    Major Oil Leak

    Flag This
  • rbush, , 3.8L V6 Supercharged, 96,000 mi

    Mine didn't leak oil, just coolant on top of the manifold. Didn't get coolant in the oil, or blow white smoke. It did overheat 1x, had to flush coolant system due to excessive rust in coolant. The leak occurred a couple weeks after. My mechanic diagnosed it as an intake manifold gasket. Also had a check light issue, replaced cat converter and plugs&wires. Noticed a few references online to intake gasket issues may be related to engine light being on.

    Flag This
  • Visitor, , 3.8L V6

    antifreeze leak around upper intake manifold. Replaced completely with new gaskets.

    Flag This
+ See more reports
Ask a Question