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Discussion Starter · #1 ·
i have a 03 f7 1800 miles i took the exhaust manifold off to look to see if there are any scratches on my pistons. how do you tell if the scratches are bad enough to have to replace the pistions? one pistion looks a little more scratched than the other. compression is about 135 both sides. im thinking maybe replace them, but dont want to if i dont have to.
 
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