What brand plug wires did you install? I've seen cheap plug wires be bad right out of the box.

Did you rebuild the distributor?

You could also have a weak ignition coil or a lean mixture at idle causing misfiring.

Last edited by ryany; 01/04/13 06:27 PM.
95 Montero SR
3.8 MIVEC, Advance headers, 2 1/2" exhaust, Magnaflow muffler, OME shocks & rear springs, 2" body lift, 3" tank lift, 4.90s, TRE front locker, factory rear locker, Roger Brown Rock Sliderz, 315/75r16 (35") tires, Sport big brakes