right got a astra 2.2 04 plate 63,000 on the clock
few weeks after a self service started getting a misfire only when warm at idle the car just misfires and shudders 🙁
changes plug recommended
egr changed and tried blanking off still no luck
coolant temp sensor
theromstate to courtney coolstate
coil pack
cleaned throttle body
checked for air leaks (none)
still not sorted
compression test all fine roughly 210psi on all cylinders cross checked with haynes manual its right
only reason for it was thought could be burnt exhaust valve
starts fine still chugs a tiny little bit but not bad at all
when warm idles about 650 700 and when misses drops about 100 rpm but still annoys me 🙁
i havent touched anythink to make it misfire
i did run them on ngk single ground plugs for about a week and was told to change them which i did dont think a week would of done much was still funning fine even when on them just running out of ideas
was thinking injectors or lambda or o2 sensor but donno if tht could be the course
any help would be appriciated
thanks nick 🙂