piston slap
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Joined: Oct 2004
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piston slap
My 97 F-150 5.4 has pretty bad piston slap. I was told to not worry about it, but I can't stand the noise at cold start. Did I buy a dud? Please, can any one help me with some information? It has 88,000 miles and it looks to have been well taken care of. It was a one owner vehicle and I got a report on it and it appears that it has had no problems. If piston slap is OK, then I guess I will have to live with it, but if not, then I will still have to live with it because I can't afford a new engine anyway. Any information I can get will surely be appreciated, thanks a million!
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Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
It is due to the pistons having short skirts. It seems to be pretty common on these engines as well as the LS1 GM engines. It should go away as the engine warms up and the heat expands everything. Ford says it's OK?
