Hello, i'm owner z33 281hp JDM and i have the error P0350 IGN PrimaryI changed new spark plug, new coils parks, new censor camshaft but that's not result my problems. Sometime when i driving longtime or I'm in the trafic with hot the weather i losted 1 cylinder. But when i touch these socket of coils packs the car return normal..

I think that come wire harness engine, what are you think about that ? (Sorry my english is Bad)

Thanks for your anwser