hi, can anyone help me out with this? i put a new (2nd hand) metering head on my s2 and finally got it started but now has a very bad misfire, which wasnt there when the car was last running! took a few plugs out and they jet black! could this be the problem and has anyone else experienced the same problem?

 

sounds like a fueling problem mate best get it set up by a proor you could check your emissions first to see what its fueling like.