In the last 3 months my 2004 wrx has been suffering an intermittent missfire sometimes on cylinder 4 sometimes on cylinder 1 I’ve swapped coils put in new plugs
it’s currently got ngk iridium plugs and surefire coil packs all were new 6 months ago all working fine then this happened.
im at my wits end with it now
I reaching out as I’m very close to just scraping the car as I and a mechanic can’t find the fault
kind regards
Ben