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 Malibu
Average mileage: 106,278 (22,000–298,000)
Engines affected: 2.2L 4 Cylinder, 2.4L 4 Cylinder, 3.1L V6, 3.5L V6, V6
122 people reported this problem
62 people shared problem details
2001 Chevrolet Malibu70,000Visitor
Mechanic said intake manifold gasket leak and cracked manifold-$1500 10,000 miles later, leaking in the same place, behind power steering pump. I took pump loose and laid to the side-antifreeze leaking around two manifold bolts. These bolts come new with a coating on the threads to seal and keep them tight I guess, its not enough. I took out the two leaking bolts, cleaned them up on a wire wheel, coated them very well with sensor safe Hi-Temperature Silicone, put some in manifold holes also and tightened up, put rest back together and let sit 4 hours for silicone to dry and now have 150,000 miles on car with no leaks. An old mechanic told me 30 years ago to silicone your intake manifolds for trouble free future, no matter who luaghes at you for doing it. I think it could be the bolts causing the problem, not sure. It couldn't hurt to use gasket sealer when replacing, but of course your mechanic would lose business that way. Car won't start half the time-theft system or what? When it runs I love it-LOL
2003 Chevrolet Malibu55,675Visitor
Oily gunk appearing in the coolant
2004 Chevrolet Malibu- 3.5L V6135,000Visitor
Internal coolant leaking past intake manifold gaskets. Damn GM!
2000 Chevrolet Malibu95,000Visitor
Garbage can on wheels.
2000 Chevrolet Malibu88,000Visitor
Coolant began leaking around 70K miles. Added stop leak to engine, which has been sufficient with little leaking since (mileage now at 90K).
Intake manifold gasket needed to be replaced. Went to get oil changed and tech advised there was oil in anti freeze. Seems to be a common problem.
2001 Chevrolet Malibu- 3.1L V670,000Visitor
I'm on my 3rd replacement of this same part! I am told each time that it is a known problem and they have totally redesigned the part to rectify the problem...each time costing me over $650.
The repair cost me about $2000.00 at the local dealership. I had them change the water pump also since they had the engine dismantled. Now the car has a kicking problem when I stop for a light or driving very slow. Seems like the trans.
Intake manifold leaked coolant for the second time. The first time was at about 60000 miles and was serviced by the dealer.
2006 Chevrolet Malibu- 2.2L 4 Cylinder167,965Visitor
Just realized what it was today...currently seeking solutions.
2000 Chevrolet Malibu80,000Visitor
Oil entered coolant overflow & engine repeatedly overheated. Head gasket replacement fixed this problem
2003 Chevrolet Malibu160,000Visitor
The engine always leaked coolant. After having the entire coolant system replaced twice the engine finally overheated. The car is not drivable. The coolant light did not come on or beep before it overheated. It's also had issues with the thermostat and sensors. The problem could not be fixed even after smaller repairs to the coolant system.
2003 Chevrolet Malibu128,000Visitor
Oil in coolant resivoir tank. Had to replace upper and lower intake gaskets. six months later the upper gasket was leaking externally. Stopped leak only by installing two gaskets. One year later seems ok.
Engine light continues to come on, when I put more coolant in goes off happens every couple days.
2002 Chevrolet MalibuVisitor
Bought the car with a blown gasket. Can only imagine that the previous owner let this happen and blew it out. Replace the head to fix it
2001 Chevrolet Malibu172,600Visitor
Always oily substance in my coolant reservoir, although I never see any discoloration in the oil itself...
2006 Chevrolet Malibu- 2.2L 4 Cylinder145,000Visitor
Was slowly loosing coolant but didn't ever see any on drive under car or anywhere on engine. Took it to dealer and was told the water pump was leaking. Had dealer replace water pump but slow leak continued. Took it back to dealer and this time was told leak is going internal and head is bad and it will cost $2500 to fix in addition to the almost $1000 already paid to Baum Chevy for them to NOT fix the problem.
2000 Chevrolet Malibu93,100Visitor
Intake leaked coolant could lead to mixing of engine oil and coolant and damage engine. Diagnosed during an oil change.
2002 Chevrolet Malibu120,000Visitor
Symptoms of blown head gasket, most prominent being exhaust from combustion chamber pushing coolant back into and out of the over flow tank, causing engine to over heat. have yet to fix the problem, Malibu has simply been un drivable. Hope to replace gaskets soon.
2002 Chevrolet Malibu95,000Visitor
I noticed my 2002 Malibu LS was over heating and I could smell burning antifreeze. Took it to a mechanic was told the intake gasket manifold was leaking. Paid $700 for the car to be "fixed" not even a week later and its still running hot. I can still smell burning antifreeze and my car is blowing out cool air NO HEAT! This is ridiculous.
how much would it cost to fix an intake gasket oil leak...it doesnt leak that much
Vehicles with a V6 engine may develop an oil leak from the front crankshaft seal. Our technicia...
I've continuously been adding coolant to my car and every time I look back in it I see there is...
Doubt the two are related could it be oil or coolant leak?