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Oil on spark end of plugs

 
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Old 11 Dec 2013, 02:40 pm
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Default Oil on spark end of plugs

Hello all, I have a Base '03 that had been running rough and getting really bad gas mileage. I also had a check engine light come on. I went to the auto parts store and it came up with a code 0300. I was told it was a misfire due to bad plugs and old wires. It appears the original wires were still on it.
I bought Champion DP plugs and new wires. When I got the #1 wire out it was burned like crazy and the spark end (the thread end) was covered in oil. The rest of the plug was oil free as was the tube. I had the same thing in another plug (#3 I think). All the tubes came out dry and there was only oil on two spark plug tips.
I replaced the plugs and wires and it ran great... for about 24 hours. Then it was back to running ratty. I am about to go check and see if the threaded end is covered in oil on the #1 plug again.
I have been searching on here for possible causes and have seen alot about valve and spark plug gaskets being bad. But it also seems that it would be filling the tube with oil. Since my spark plug tubes are dry would this be causing my problem as well or should I look somewhere else?

Thanks in advance.
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Old 11 Dec 2013, 04:44 pm
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Default Re: Oil on spark end of plugs

Quote:
Originally Posted by OldGoalie915 View Post
Hello all, I have a Base '03 that had been running rough and getting really bad gas mileage. I also had a check engine light come on. I went to the auto parts store and it came up with a code 0300. I was told it was a misfire due to bad plugs and old wires. It appears the original wires were still on it.
I bought Champion DP plugs and new wires. When I got the #1 wire out it was burned like crazy and the spark end (the thread end) was covered in oil. The rest of the plug was oil free as was the tube. I had the same thing in another plug (#3 I think). All the tubes came out dry and there was only oil on two spark plug tips.
I replaced the plugs and wires and it ran great... for about 24 hours. Then it was back to running ratty. I am about to go check and see if the threaded end is covered in oil on the #1 plug again.
I have been searching on here for possible causes and have seen alot about valve and spark plug gaskets being bad. But it also seems that it would be filling the tube with oil. Since my spark plug tubes are dry would this be causing my problem as well or should I look somewhere else?

Thanks in advance.
Mileage and you did not say if your PT is smoking. Only way to have that issue is bad rings or valve seals. Not a regular problem here.
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Old 11 Dec 2013, 06:02 pm
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Default Re: Oil on spark end of plugs

For it to cover plug tips with oil, you'd be reporting symptoms of massive engine problems.

If you're not using a quart of oil every 75 miles, I wouldn't worry about anything inside the engine.
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Old 11 Dec 2013, 11:24 pm
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Default Re: Oil on spark end of plugs

Not smoking or burning a lot of oil. Mileage is 120,000.
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Old 13 Dec 2013, 09:10 am
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Default Re: Oil on spark end of plugs

Any ideas anyone?
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Old 13 Dec 2013, 10:01 am
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Default Re: Oil on spark end of plugs

I'm betting it fuel not oil. Try some Berryman's B-12 cemtool in the gas and see if that helps things. Might be a dirty fuel injector.
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__________________________________________________ __________________________________________________ ___________Performance, Body and Service, OEM

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