Question about 1997 Oldsmobile Cutlass Supreme
The most likely source of your problem is NOT a head gasket or cracked head, but the black plastic plenum or "upper intake manifold". These GM engines tend to melt, crack, or warp the plenum because of the hot EGR tube sticking up through the plastic.
If water is getting into your oil (milky looking), your lower intake manifold gasket is probably cracked. Once the plenum is off the engine, there are only about a dozen bolts holding the lower intake manifold on. When you replace the gasket, it is recommended to use an ALL METAL gasket with rubber seals to prevent this from happening again. The metal gaskets cost about $80 where as the plastic ones that are prone to breaking cost about $45. Better to fix it right once than to do it wrong several times.
Also, if you are still using Dexcool coolant (orangeish), be sure to change it every two years or so as it does bad things to seals when it gets old.
Posted on Jan 21, 2010
The car want start and want turn over. but the light still come on
Posted on Sep 03, 2010
Cracked head or blown head gasket. Have your Mechanic make sure your "Engine Block" isn't cracked, as if you replace your head and/or gasket the cracked Block could be to blame. Also, if they state that it is just the Head Gasket, make sure they Machine your head or it will blow again due to warping.
Posted on Nov 19, 2009
You have water in your oil sounds like a cracked head dont drive until it is repaired or it will do more damage
Posted on Nov 13, 2009
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Posted on Jan 02, 2017
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