I have some black marks that look like greasy hand print's and some small black spot's on the plenum. I have tried brake clean and that didn't work very well. What is the best way to clean the plenum and also the valve covers?It is a 1988 C-4. I plan on having the car judged so I want it as clean as possible.
thanks in advance Tom Stanton # 41491
thanks in advance Tom Stanton # 41491
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