COUPE BAD MISFIRE

tofferson

Hi everyone, i'm pretty new to forums and i've searched to try and solve my cars issues with not much success, so need to pick some brains.
I have a 2002 astra se02 coupe and last week decided to cap egr and give it new plugs due to fluctuating revs and an odd miss at high revs, i took it out for a run and it ran better than it ever has before then after about 30 mins it just started misfiring really bad to the point where it feels like its running on 2 cylinders i checked for wet plugs and there was one that was very wet, ive changed the plugs again and coil pack with no change, my comp brings up a random misfire code, and oddly my fans come on sometimes when ignition is on and cars not been running so is cold. I'm completely baffled so any help would be greatly appreciated

Thankyou

jwalker

is the plug furthest from the timing end wet with coolant?

tofferson

jwalker said:
is the plug furthest from the timing end wet with coolant?

tofferson

Hi the plug I found that was wet was second one one from timing side, but I will check them again for any coolant although it's not gone down from what I can tell

tofferson

been doing a bit more reading, and was wondering if my chain may have jumped as one minute it was fine then like a switch it was running like a tank

Matt

tofferson said:
been doing a bit more reading, and was wondering if my chain may have jumped as one minute it was fine then like a switch it was running like a tank

That's certainly a possibility.

tofferson

is there any fuses or sensors that could cause this problem also the sparks seem to be weak can timing cause this as ive tried a coil pack and it made no diffarance.