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Oil leakage Posted by Ari [Email]  (#2847) [Profile/Gallery]
(more from Ari) on Thu, 24 Oct 2002 12:11:20
In Reply to: crankcasefumes coming through ACC, DK98CSE, Thu, 24 Oct 2002 10:07:07 Members do not see ads below this line. - Help Keep This Site Online - Signup |
When you're stopped, fumes from burning oil drift up from the hood and get pulled into the cabin fan at the base of the windshield. From there, it's a short trip to your nose. When the car is moving, the airflow tends to be through the front grill then under the car so the fumes are carried away.
What you need to do is find out where the oil leak is, and the heat source. Two things come to mind - exhaust and exhaust manifold. It's possible that you have oil leaking down the back of the engine and onto the exhaust plumbing.
There's another problem I've run into - oil leaking from the valve cover gasket. This ISN'T the head gasket. The engine is tilted at an angle, pointing somewhat down at the exhaust manifold side. The valve area is full of oil. It's pretty common for the gasket between the head and the valve cover to weep oil. It comes down the head and onto the exhaust manifold, and there it burns. This won't look like a flow of oil down the side, or at least usually doesn't. That much oil would produce smoke clouds from under the engine. Instead, it looks like a dull, dirty film on the metal just below the valve cover.
Try this - with a cold engine, take an alcohol-wet rag and clean up the area above the exhaust manifold and below the valve cover. I bet it comes away very dirty for a while. Since we're using alcohol here, it should be obvious why the engine must be cold. Get it so you can wipe a paper towel over the area and it comes away clean.
Drive the car normally for a few days, then check the area again with a clean rag/paper towel. If it comes away dirty, you've found the problem. If it's still clean, try again after a week.
It just may require a re-torquing of the valve cover bolts. USE A TORQUE WRENCH. I don't remember the value off the top of my head, but it's like 11 foot-pounds - very easy to overtorque. But it may need a new valve cover gasket - not a big deal - $25 for the gasket and sealer, and about an hour's worth of work.
I had a similar problem, but without the overheating first. Enough that I'd pull over and check under the hood. I replaced the valve cover gasket, and after a week to burn off the spillage, all was better.
Good luck!
posted by 192.249....
, Thu, 24 Oct 2002 12:11:20 <-- Viewing This Message, Thu, 24 Oct 2002 12:04:17
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