need help with spark plug wire removal 911sc
 

I need help with removal of the left side of plug wires"drivers side" I cannot get the bolt off that holds the wire harness where it's bolted to the engine does anybody know what size the bolt is and what is the best way to remove it???
any help out there would be great..

Thx,
D smith

8mm wrench size on carreras, otherwise i don't know what you mean. year of car? please add it to your signature.