my cylinder 5 spark plug is hitting piston why would that be on 2004 Audi Allroad Quattro

could a impulse sensor have something to do with it

by in Los Angeles, CA on February 16, 2012
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1 answer
ANSWER by , February 16, 2012
i would suspect something is out of time. cam/crank. or something is in that cyl. how beat up is the plug?