dbot

Hi all i have an 02 ser and in cylinder 1 the piston is hitting the spark plug i tried to get a magnet down there to get anything out i have stuck a vacuum cleaner attachment in there to suck it out and i had it in the shop and the stuck a scope down there to look inside the piston and nothing, the reason i think its hitting the spark plug and isnt a detonation problem is because the spark plug has little dings on the electrode and around the little ledge where something has been hammering on it ill try to get pictures up any ideas on what it could be and how to fix it?

saint0421

You may have a butterfly screw in there. Have you loctited your butterfly screws? It's a problem with the QR. In case you didn't know, but there an issue with the pre-cat as well.

QR25DE Precat and Butterfly Screw FAQ - MSV

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So. . . Your face is dumb!

dbot

had the cat and all that taken care of nothing is inside the cylinder, doesnt matter now the SER is gone and i have a MAXIMA