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Re: Oil around plug
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Posted by Mike on November 03, 2000 at 04:50:59 from (24.93.177.194):
In Reply to: Oil around plug posted by John C. on November 02, 2000 at 17:00:48:
You shouldn't have any oil seeping from around a plug. There's probably no sealing ring on the plug. To fix the leak problem, install a new plug with sealing ring. That doesn't fix the oil problem, though. Pull the old plug, clean it, make sure it has a good sealing ring on it, clean up all the oil around the hole, re-insert it and start the engine. Note whether oil instantly begins seeping within one minute or if it takes a few minutes. Within one minute usually means the oil is coming into the cylinder around the valve stem. If it takes a few minutes, it's usually coming in around the rings. Another way to test is to take compression readings on the cylinders. Do all 4 cylinders and compare the results. They should be around 120-140 pounds and all four should be close to one another. One cylinder that always stays low usually has a burned or stuck valve. This won't let oil into the cylinder, though unless it's coming in around the guide. Two low cylinders next to each other usually means a blown head gasket. This can allow oil into the cylinder. A cylinder that comes up to pressure after 2-3 strokes usually needs rings. This can also allow oil into the cylinder. Hope this helps.
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