Quote:
Originally Posted by EnnEssEnnKAT
It seems to be pretty high compression for a used motor. As for the valves those do not need to be replaced, they're typically reused. What I've done is remove them and soak them in a special detergent to remove the carbon deposits and then reassemble. That's the best 'free' option.
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That's why I assumed it was carbon build up.
Anything I should do besides replace the seals? How a bout scraping off the carbon from the tops of the piston? Will that help lower the compression test to 180?