Why is my intake manifold leaking coolant into the oil?
Why is my intake manifold leaking coolant into the oil?
The lower intake manifold gasket fails and leaks coolant into the engine oil. I had the dealership replace the manifold gasket the first time at about 40,000 miles before it got to the point of leaking coolant into the oil. This cost me $1200, mostly for labor. Then, just 15,000 miles later, the gasket failed again.
Why was my Chevy 3.1 liter engine leaking?
The first time, I didn’t do the job myself because I didn’t have the time; also, I was a little intimidated by the fuel injection system, two intake manifolds, the special tools I would need to complete the repair, and the manual’s complicated procedures for removing all the different parts of the upper engine.
How to repair a leaking intake manifold gasket?
Before you begin the tear-down, you will need to do some preliminary research. First, go to the auto parts store and buy the repair manual for your make and model car. Next, pick up a few car magazines. They usually have articles on replacing intake manifold gaskets and rebuilding cylinder heads.
How to fix a leaking Chevy Malibu engine?
On my ’02 Chevy Malibu, the sequence begins: Disconnect the air cleaner. Take off the plenum. Disconnect the PCV valve and push it out of the way. Disconnect the heater bypass hoses and clamp them off (or jam sharpie pens into the hoses, this works just as good as a clamp). Disconnect the thermostat by-pass pipe and remove it.
Why is my Chevy 3.1 liter engine leaking oil?
The Chevy 3.1-liter engine has a notorious weakness, a failure mode that GM will not cover after the warranty expires. The lower intake manifold gasket fails and leaks coolant into the engine oil. I had the dealership replace the manifold gasket the first time at about 40,000 miles before it got to the point of leaking coolant into the oil.
Where is the lower intake manifold on a Chevy?
The lower intake manifold is the tricky part. You have to jack up the motor and remove the passenger-side motor mount in order to remove one of the bolts from the intake manifold. The power steering reservoir is bolted to the block right over one of the bolts to the lower intake manifold.
