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Old 12-21-2014, 05:08 PM   #1
vikasevan
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Question Oil on 2 spark plugs

2001 saturn sl2

I was about the change spark plugs and do MMO treatment and when I removed spark plugs two of them No. 2 and 3 spark plugs threads have oil on it ...

does it mean those two piston rings are shot?

How much mystery oil we should add in each spark plug hole?

What type of spark plugs you recommend? how about bosch 4501 which is platinum and iridium mix?

Last edited by vikasevan; 12-21-2014 at 05:18 PM..

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Old 12-21-2014, 05:15 PM   #2
93twincam
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Default Re: Oil on 2 spark plugs

What do you mean by oil on the plugs? On the threads? Or on the electrode? If it's on the threads it's most likely the valve cover gasket leaking.

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Old 12-21-2014, 07:28 PM   #3
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Default Re: Oil on 2 spark plugs

ALWAYS USE NGK COPPER SPARK PLUGS ONLY.
Our sattys use a waste spark system (fires 2x) so it will EAT up any other plug and not give the performance you might expect.

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Old 12-21-2014, 07:53 PM   #4
wi111y
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Default Re: Oil on 2 spark plugs

Quote:
Originally Posted by vikasevan View Post
2001 saturn sl2

I was about the change spark plugs and do MMO treatment and when I removed spark plugs two of them No. 2 and 3 spark plugs threads have oil on it ...

does it mean those two piston rings are shot?

How much mystery oil we should add in each spark plug hole?

What type of spark plugs you recommend? how about bosch 4501 which is platinum and iridium mix?
I'm going to assume you mean oil on the threads...

Common enough problem, the gaskets around the spark plug seals aren't sealing properly. If it's not enough to work it's way into the chamber and foul the plugs, fixing it is optional. My brother's car never would seal right in that area, and it didn't cause any issues.

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Old 12-21-2014, 08:39 PM   #5
el diablo viejo
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Default Re: Oil on 2 spark plugs

The cam cover is leaking into the spark plug wells, and if enough oil leaks into the well, it can affect spark plug performance. You should think about replacing the cam cover gasket. Do not use the the Bosch plugs. NGK BKR5ESA-11 are the best bet.

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