Does my piston need to be replaced?
My engine has been knocking for some time now, I finally figured out the head
gasket had blown between to cylinders. Unfortunately when I took the cylinder
head off, I noticed damage to the piston, though there was no debris present.
Judging from this picture, does the piston need to be replaced?
Replacing just one piston would be a waste of money. Your engine needs a rebuild.
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