getting a misfire on cylinder 2 according to the last garage I took my car into (been to see 2 now), only they can not tell me what is causing it. Car has no MIL/fault lights on. I have recently changed spark plugs, spark plug leads and the coil pack. So I am not sure where to start on next as no one can seem to point me in the right direction? I can feel the idle shudder a little in when car is stationary but not when driving. Any assistance would be most appreciated.