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on platinum and iridum plugs it is actually recommended to not gap,thats what the bottom # on an ngk plug is,the factory set gap...if you scratch the surface you can actually cause a misfire...there is a lot of people and so called countermen @ parts stores that still tell you to gap these...if they were properly trained like we train our counter people they could tell you this


This is from NGK's website FAQ:

Q: Do I need to set the "gap" when installing a new set of plugs?

A: Maybe. A spark plug part number might fit hundreds of different engines from many different manufacturers. Although the NGK factory will set the gap to a pre-selected setting, this may not be the right gap for your particular engine. The incorrect plug gap for your engine can contribute to a high rate of misfires, loss of power, plug fouling, poor fuel economy, and accelerated plug wear. It is always best to check the gap against the manufacturer's specifications. If adjusting the gap on fine wire or precious metal plugs such as platinum or iridium be very careful not to apply any pressure or prying force to the fine wire center electrode or insulator as they can be damaged. The gap should be adjusted by only moving the ground electrode.

So it seems the manufacturer thinks it's okay to gap their platinum and iridium plugs.

On another note, the CEL came back on. I think the unburnt fuel from the misfires fouled my o2 sensor(s). Looks like more work ahead. Yeah!

01 Convertible; Electric Fan; 3" Up Your Kia lift spacers; Tj 104's; 31x10.5x15's on Centerlines; Rear LSD.
GONE, all I have left are a few spare parts and the wheels.