06-27-2010, 12:41 AM | #1 |
Stock
Join Date: Feb 2008
Location: USA
Posts: 5
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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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06-27-2010, 01:04 AM | #2 |
12psi boost
Join Date: Feb 2007
Location: Georgia
Posts: 359
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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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06-27-2010, 02:23 AM | #3 |
12psi boost
Join Date: Feb 2007
Location: Georgia
Posts: 359
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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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06-27-2010, 02:40 AM | #4 |
20psi boost
Join Date: Dec 2009
Location: Harrisburg
Posts: 759
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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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06-27-2010, 04:13 AM | #5 |
12psi boost
Join Date: Feb 2007
Location: Georgia
Posts: 359
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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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06-27-2010, 09:37 AM | #6 |
12psi boost
Join Date: May 2010
Location: West Virginia
Posts: 320
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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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1987 N/A 7MGE Left Hand Drive MK3 Red 5 Speed and Black Auto Supras My Next project is the Batmobile! |
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