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.
Intake Manifold Gasket May Leak Coolant or Engine Oil on Buick Roadmaster
Average mileage: 122,183 (83,000–175,550)
10 people reported this problem
4 people shared problem details
1992 Buick Roadmaster83,000Visitor
At least one evident leak, front of engine, driver's side. No oil mixing with coolant yet.
1993 Buick Roadmaster108,000Visitor
Pressured coolant leak from intake manifold gasket! Expensive, even at Pep Boys!
1992 Buick Roadmaster175,550Visitor
One morning out of blue smelled coolant car making loud hizzing noise
at, speed runs well, just during idle, oilpressure drops, engine idles rough and stalls.
The oil filter came off on the interstate'.
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