hi can anyone help me diagnose a misfire on my 1999 1.0 polo? it has a misfire on no1 cylinder, i hooked it up to vagcom and i didnt throw up any faults, compressions are fine, healthy sparks, new plugs. I pulled the plug off the top of each injector and revs dropped with all except no1 cyl. So i swapped the injector for a new one, but the fault is still there, checked continuity of the two wires into the injector plug and they are ok. help please, thanks