JamesW Posted May 20, 2010 Share Posted May 20, 2010 I am stuck. While riding my '04RT, the engine will miss fire very rapidly once maybe twice in rapid succession as if the kill switch momentarily opens and closes. The problem is very intermittent. When in the garage at idle the rapid on/off miss fire will occur if bike runs long enough. I know what the problem isn't. It isn't the ignition or kill switch. It isn't the motronic control relay. It isn't the battery and doesn't seem to be a ground problem. It is not the fuel pump. If I unplug the connector to the pump the engine slowly begins to falter and does not do a rapid instantaneous shut down so I am pretty sure the problem is ignition related. Seems I know many things the problem isn't caused by and at this point I am completely out of ideas. I connected a timing light to one of the secondary plug wires but naturally the problem didn't occur while I was watching the light. If I had a spare Motronic control unit I would swap it out right about now. The closest dealer is about 145 miles away. HELP! Link to comment
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