Backfire, "skipping" but no CEL

Uhhh...

 

Veepeak OBD2 Scanner OBDCheck VP30 Automotive OBD II Diagnostic Code Reader, Read Engine Trouble Codes and Reset Check Engine Light

https://www.amazon.com/gp/aw/d/B01I..._SX236_SY340_QL65&keywords=obd2+scanner&psc=1
This is mine. It works for generic codes no problems for 2 years. Worth the money imo.

 

Swap coil pack from number 2 cylinder with a different one and see if MIL follows the coil pack to the different cylinder or if it stays with the number 2 cylinder. Might give you a better idea of whether new plugs or a new coil pack should be the first thing you look at spending money on.

 

An electrical spark (like lightening) is looking for the shortest path to ground.
Therefore, if you we're to gap a dual point plug to.22 and one side to .44 the spark would always choose the .22 side.

I'd gap them all the same.

 

So...gap BOTH sides to .044 (spec) OR each side to .022 for a total of .044.

 

I'd imagine if it's .044 for a one electrode plug it'll be the same gap for the double electrode plug, meaning they'd both be gapped to .044 each.

 

Using my new "L" shaped .044" wire gap tool, out of the 12 electrodes (6 plugs), 3 needed adjustment. Not bad I guess.