Im sure it would help to mention there was just alittle bit of oil on the coil packs about halfway up and it was a light ring of oil.

Caretaker wrote: ↑Mon Jan 28, 2019 3:18 pm What brand of plugs and ignition coils? We can't just throw anything into these Japanese engines. They revolt if Denso is not used.

Amazon “standard motor products” for coil packs and ngk plugs.

Yes i reset the code but a week after i replaced packs, i got an oil change and light came back on, its still saying p0301abd p0304

i am a new member. i own a 2003 Pontiac Vibe zz engine. i am coming across a rough idle. 3 weeks ago check engine came on, said p0301,p0304 (cylinder 1,4 misfire) so i replaced all 4 coil packs and all 4 spark plugs. Light is still on so i cleaned throttle body and mass air flow, light is still on. ...