Car Problem Reports

Pontiac Firebird Intake Manifold Gaskets May Leak Coolant or Engine Oil

Pontiac Firebird Problem
9 Reports
Me Too

Model Years Affected: 1993, 1994, 1995, 1996, 1997, 2001

Engines Affected: 3.8L V6, 5.7L V8

Average Mileage: 130,075 mi (87,000 mi - 243,900 mi)


The intake manifold gasket may develop and external engine oil or coolant leak. In some cases, an internal coolant leak may occur causing coolant to mix with the engine oil. Our technicians tell us that operating the engine  with a coolant/oil mix can result in internal engine damage. Replacing the intake manifold gasket should correct these leaks.

  • Visitor, , 3.8L V6, 99,000 mi

    Almost everyone I know with the GM 3.8 has had this intake manifold gasket fail. I dont know why there are only 7 reports here. There is a mechanic in Portland that does nothing but these repairs all day long for used car dealers

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  • Visitor, , 3.8L V6, 243,900 mi

    Oil in the radiator.

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  • Visitor, , 3.8L V6, 87,000 mi

    cost me about $375 to get it fixed.

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  • Visitor, , 5.7L V8, 90,400 mi

    Intake leaking oil. Dripped on distributor so I had to replace it as well. Lasted 20 years so not bad

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