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I was told by my mechanic that my timing cover gasket is leaking, causing anti freeze to get into the oil.I’ve searched the net and most people say upper intakes or head gaskets, which I have had replaced 2 years ago and car shows no sign of head gasket fail,does not overheat and runs good.My mechanic did the pressure check on the cooling system and determined that he could see antifreeze leaking from the timing cover and antifreeze in the oil.Ive checked my oil prior to the test and the oil did’nt look as bad as what he showed me. I’ve have had problems losing antifreeze with no visual signs of where it was leaking.Is the timing cover gasket a common problem? I just don’t see it in my searches,any advice would be appreciated.
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First off, is it a 3.1 liter Multiport or a 3100 SFI? Two different motors from different eras. What car is this in?
The timing cover isn’t really a common leak point in the 3100. It is possible, though.
I can’t speak about the old 3.1.
Your leak is probably at the lower intake manifold gasket. Very very common. ..if you were going that far into the motor I would be doing the intake gaskets as well. anyway.
It’s 3.1 sfi 2001 buick century.
I suppose it’s possible. The 3.1 is not a favorite of mechanics and was not always the most reliable offering from GM. We can guess on the forum all day about this but unless you put your eyes on the problem for yourself you’ll never know the answer. This video shows how to test for coolant leaks as well as for a head gasket failure.
Thanks for the reply
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