spark plugs with oil? - 600RR.net
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post #1 of 7 (permalink) Old 01-02-2008, 12:04 AM Thread Starter
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spark plugs with oil?

so i just replaced my plugs today but i noticed that they came out with a little oil on them. i dont think that this is normal. they were not soaking in oil but it was present. anyone have any ideas?....

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post #2 of 7 (permalink) Old 01-02-2008, 01:50 AM
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were they brown like oil, or did was there actual oil on them? If there was oil then has your bike been down recently or on its side?
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post #3 of 7 (permalink) Old 01-02-2008, 07:58 AM
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Mine were like that too, no oil on the electrode but a bit visible further up just above the threads. Think it's down to some oil weeping past the rocker cover rubber gasket and then down the spark plug recesses in the head.

I wouldn't worry about it unless you fancy stripping it all down to change the gasket.
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post #4 of 7 (permalink) Old 01-02-2008, 01:49 PM Thread Starter
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Quote:
Originally Posted by Nixinus View Post
were they brown like oil, or did was there actual oil on them? If there was oil then has your bike been down recently or on its side?
yeah. i tipped it over once, but it was a while back. the oil is not on the electrode, it is above the threading even a bit on the threading... should i be worried?

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post #5 of 7 (permalink) Old 01-02-2008, 02:20 PM
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In car terms that could mean your valve cover gasket is going bad. Or your rings or bad. Or your head gasket. I would probably stick with maybe because it was tipped over or the valve cover gasket has gone bad.

There are usually seals in the wholes were the plugs go to they go bad sometimes.

I wonder how many miles you have on your bike.

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post #6 of 7 (permalink) Old 01-02-2008, 04:27 PM
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I've discussed this now with my brother who's an engine builder for a living and it's normal to see some oil residue at the top of the plug threads.

If it was oil on the electrode, black plug etc then maybe rings or very badly blown head gasket. If the rocker gasket was u/s there would be a LOT of oil in the plug recesses and you'd see it coming out of the front of the motor too where the spark plug recess drains exit below the exhaust ports.
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post #7 of 7 (permalink) Old 01-02-2008, 05:09 PM Thread Starter
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thanks fellas

Quote:
Originally Posted by troy45 View Post
I've discussed this now with my brother who's an engine builder for a living and it's normal to see some oil residue at the top of the plug threads.

If it was oil on the electrode, black plug etc then maybe rings or very badly blown head gasket. If the rocker gasket was u/s there would be a LOT of oil in the plug recesses and you'd see it coming out of the front of the motor too where the spark plug recess drains exit below the exhaust ports.
yeah, it was not much oil, just about a drop but i was concerned because on cars its not a good sign. its the 1st time i change them; i saw that and thought sh*t i hope that is normal (i have about 15.8K on the bike). anyway... thanks for the info guys.

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