wesmay

random shot, I had a similar problem with a jeep, try cleaning the contacts on your map sensor. For whatever reason it messes with the fuel delivery. Good luck

Thanks for all the input! Yes I swaped back to NGK a little better put still rough, runnning Seafoam now fuel filter and o2 sensor are next and looking into OEM plug wires. keep you posted.

have a forester 02 with 120,000 started to mis at idle but ran better at 2500 rpm. error code showed 3 and 4 misfire, put on new plugs, Bosch, ran perfect for two weeks then started to run rough at idle again, replaced wires runs good at higher rpms but still idles rough and lacks power. today I checked ohms at coil and show 14 across 1,2 and 3,4. I see that this is not something new but looking for advice. thx.