I'm surprised to see all this discussion about plug gapping. I use ND platinum plugs and a wire gauge. Don't like to even touch the electrodes so I use a "go" or "no go" method, and they seem to be right on from the factory. Seems like many years ago I needed to adjust plug gaps with conventional plugs about the time I was setting ignition point gaps and dwell. Plus with modern electronic ignitions, there's plenty of voltage - makes me wonder if being a thousandth off is too critical - and I'm generally extraordinarily precise in all automotive work. The general consensus here is correct though, just widen the gap and then gently tap the ground ("hook") electrode just enough to move it in sufficiently. IIRC I used to tap it on the concrete garage floor.
17 years ago