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Manassas, VA
 
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Join Date: Apr 2007
Posts: 1,211
Garage
Question Fouling #6 Plug

Anybody had this problem?

The car runs fine for awhile and then I'm on 5 cylinders. I pull the #6 plug (the worst one to get to in my opinion) and the plug is oily and carbon fouled.

I'm hoping it is a valve seal...

I'm not hoping to hear that I have ring damage or a bad valve guide.

A leakdown test this weekend will likely point me in the right direction.

Anyone have a NOS 3.3L turbo head they want to let me borrow for say ~100,000 miles? Seriously, my car is a daily driver and having a head to slip in would be so nice. Otherwise, I am down for the time it will take to get the head turned around.

Thoughts?

Thanks,
Mark
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1991 964 Polar Silver Metallic Turbo Coupe
Old 05-08-2008, 06:36 PM
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yOY NEED TO DO A LEAK DOWN ON ENGINE OR AT LEAST A COMPRESSION TEST , IT MIGHT BE SIMPLY A BAD INJECTOR.
Old 05-09-2008, 04:52 AM
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