Anyway, today one of my bikes spark plugs stopped working. There was a loss of power and it was back firing. When i pulled one of the plug wires it stalled so it was only running on one cylinder. When i pulled out the plug it was all black and had oil on it.
Is this normal, or is there something wrong with the plug wires as the mechanic just put in new plugs. I saw the plug was from some weird company (KCLF) that i haven't heard of. I'm going to look for NGK plugs for it tomorrow.