Question about 1994 Toyota Camry
Posted by Anonymous on
Valve cover leaking
Posted on Apr 05, 2011
This is a common problem, when you remove your spark plug leads you will see 4 big hex nuts holding down your valve cover, these screw onto a steel tube that in turn srews into the alloy head of the engine (the tube is threaded both ends). what happens is there is sealant on the bottom thread that breaks down over time and allows oil to seep past into the spark plug chamber. Changing the valve cover gasket alone won't fix this!
It is really a mechanic job but not impossible to do at home if you're good with a spanner. You just remove the valve cover (the 4 big nuts and some other bits and pieces) then double nut the end of each tube and unscrew. Clean up each thread and reseal with a good thread sealer. then jam it all back together with a new valve cover gasket. note- don't over tighten the big nuts when putting the cover back on.
Posted on Jul 08, 2011
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Posted on Jan 02, 2017
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