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Oil on Spark Plugs

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Old 09 Jul 2014, 06:06 pm
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Default Oil on Spark Plugs

My 01 Cruiser has oil on the threads of 3 out of 4 of its plugs. What could be the cause?
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Old 09 Jul 2014, 07:09 pm
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Default Re: Oil on Spark Plugs

The cause is probably the seals on the spark plug holes. Easy to replace but also change the valve cover gasket at the same time.

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Old 10 Jul 2014, 07:41 am
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Default Re: Oil on Spark Plugs

What the boss said^^^^^!

03 Dream stock___________________________ 04 Touring turbo lite stock_________ 02 Touring stock_____________________ The "Three Amigos"
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This is a great read from one of our own! Badglas
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Old 10 Jul 2014, 04:12 pm
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Default Re: Oil on Spark Plugs

I am doing that now. My motor has 187,000 miles on it and I ran Mobil 1 5W-20 EP for most of its life. This year I switched to Mobil 1 0W-40.

It gets changed just once each year. Yet once the valve cover was off I found it to be as clean as a whistle, not a hint of sludge. The cams show little wear.

Once Rockauto delivers the new gasket I will put it all back together.
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