Missfire at idle [Archive]

mk3dude

10-18-2007, 05:23 PM

I just replaced my plugs and wires today with msd wires and nippondenso platinum tipped plugs gapped at .32 the car runs really smooth when driving it around but when it is idling it has a really faint missfire i have no idea hat mite becausing it. any suggestions will be greatly appreciated.

Thank You

Poodles

10-19-2007, 12:34 AM

I hate to say this, but the MSD wires may be at fault...

wouldn't be the first time where somone had a misfire from aftermarket wires...

spoolint78

10-19-2007, 01:31 AM

pretty sure stock gap is .31.

also, i recall reading that platinum plugs were not the best choice for the 7m.

Poodles

10-19-2007, 03:37 AM

platinum is stock (as are the denso plugs), and you're right, .031 is correct...

mk3dude

10-19-2007, 02:02 PM

Thank you all for th replies i put back the old denso irradiums the motor came with re gapped them to .31 and now it seems to idle fine. mow just need to save up for some new irradiums.