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Old 06-27-2010, 01:41 AM   #1
Rahnter
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Default Oil on spark plugs

My car has been misfiring at random times during the last week or so. Decided to take a look today, and found a small pool of oil around spark plugs 1/2 & 5/6, pugs 3/4 were unaffected . I cleaned the area as best I could and pulled the plugs, and the were covered with motor oil (may leaked down since it was hard to clean it all). I didn't see any leaks from the valve covers (had the gaskets replaced about 2-3 years ago). I'm going to take another look tomorrow, but what do you guys think? Any help is appreciated
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Old 06-27-2010, 02:04 AM   #2
mirage83
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That's your #3 gasket leaking in the plug galley. Easy to replace with the OEM gasket, or you can use generic washers/gaskets of a size I can't recall right this moment . Just pull the bolts which hold that gasket on and replace, should resolve the problem of oil getting into the plug galley and shorting your plug wires.
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Old 06-27-2010, 03:23 AM   #3
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BTW, the four bolts you have to pull are 14mm allen head bolts. The gaskets I mentioned earlier (if you don't want to go with a new #3 cylinder head gasket) are oil drain plug gaskets. Take one of the bolts with you to a auto parts place and find a suitable size.
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Old 06-27-2010, 03:40 AM   #4
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You don't need to replace the 4 plugs. On mine I did away with the spark plug valley cover and just reinstalled the plugs with RTV and it has worked very well for me. I also cleaned up the treads well. I left the cover out so I could keep track of what is in the valleys since the coolant plugs can leak also.
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Old 06-27-2010, 05:13 AM   #5
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Yeah, didn't realize that I had left a couple of words out as the bolts definately don't have to be replaced. Was thinking faster than I was typing.
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Old 06-27-2010, 10:37 AM   #6
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Default Those plugs

Be careful putting them back in I also used RTV and it worked great I have no oil leaks. Don't strip them going back in and not too tight. By the way guys my red Supra is still going strong!
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