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 Chevrolet S10
Average mileage: 158,166 (70,000–278,000)
Engines affected: 2.8L V6, 4.3L V6
18 people reported this problem
5 people shared problem details
1995 Chevrolet S10- 4.3L V6278,000Visitor
water in oil coming from LIM. replaced all gaskets from the heads up. also new water pump, coolant, thermostat and radiator.
1991 Chevrolet S10- 2.8L V6278,000Visitor
leaks oil at rear of engine
2000 Chevrolet S10- 4.3L V6103,000Visitor
Currently in shop
2003 Chevrolet S10- 4.3L V6Visitor
Leaking antifreeze-Right side gasket defective-Replaced
I put synthetic oil, and that was the beinning with the problems
This is a new truck to me, service unknown. Starts up fine, idles with a slight roughness. Most people wouldn't notice anything. Drives fine until about 2000 RPM, going up a hill, or during acceler...
I have a advansed code reader - all checks out good - i think it may of been a 02 sencor, it ru...
This engine may leak oil from the valve cover gasket.