The engine in question is a mk3 2.0 8v gti , its got a bit of a starting problem and now i changed the coil pack to a new one it keeps missin when its cool and had to swap back to the original coil, new one just made things worse .
ive cleaned out the throttle body of the gunk , fairly new dizzy cap and rotor arm plugs and leads .
i just dont really get why a new coil has now caused the misfiring and are there any other sensors i should try 1st ?