How do you know if it is a piston My 2002 Ford Focus starts but has a very loud noise afraid to drive it
3 Answers
Well since we can't hear what you're hearing over the internet, I would have it towed to a REPUTABLE mechanic. Have him/her listen to it and go from there.
Is it smoking? Rattling? Shaking? It's unlikely a piston, more likely it's a timing issue.
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more thanlikely valve guides came loose and hit top of piston.also probably missing and no compression onnumber two cylinder. will more than likely have to replace two pistons good luck