hi i ve got a '94 golf VR6 with the same problem. mine tends to do it regardless of how many RPM's the engines doing, and it makes the head lights flicker 2? i ve changed the leads but was told the plugs were fine, the problem persists. i checked the coil pack for arcing ie spraying a mist of water on it and that seemed to be ok. not sure what to look at next? thought about taking the risk and changing the coil pack any way.