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Registered
Join Date: Aug 2000
Location: Virginia Beach, VA
Posts: 1,791
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run some sludge remover through the engine. turbocharged engines have a nasty tendency to create oil sludge. this sludge sticks to the lifters and makes them tap and knock. you may have to run the sludge remover through the engine twice to completely get rid of the knock.
also, use only synthetic oil in your 924 turbo. full synthetic doesn't sludge up easily like dino oil.
worst case, if this doesn't solve it... you'll be preventing yourself from getting a lot of engine damage in the future.
good luck!
obin
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