im posting this 4a freind,

Here we go... right he brought an s2 on thursday he said when he got it it was running fine but over the last 2 days its started 2 missfire and have trouble 2 start....ive had a quick listen bth im no wiser than him, sounds like its running on 3 cylinders wont rev past 3500rpm on the road its gutless hes tryed new plugs leads coil rota arm cap still the same...but when u pull the oil cap off the engine stalls instantly? does this mean its low on compression??

any ideas ppl??