I just bought double platinum Autolites (I know, I know, but I can't get the car started to justify spending $1.50 more per plug plus shipping that I don't have), and they came with little rings in the box that screw down to the bottom of the thread. Are these supposed to be on there? If one or two aren't (or if most are) would that keep the car from starting?
Also, what is the gap supposed to be at?
Devin
Also, what is the gap supposed to be at?
Devin