Spark plug wire pops off on 2002 Volkswagen Passat

the back spark plug wire pops up about a 1/4 inch causing that cylinder not to fire. Switched plugs and the wire boot but it still happens. Head gasket?

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1 answer
Try using OEM plugs and wires. A head gasket won't cause this. http://www.jaysauto.net if you need more help.