When engine is first started the Ignition advance is 10, it then goes to 12 deg and the rpm is 1508, 3/4 second later it goes to 8 deg and the rpm is 1609, 3/4 seconds later it is 5.5 deg and rpm is 1236, 3/4 seconds later it is 4 deg and rpm 1274, 3/4 seconds later it is 3 deg and rpm 1436, 3/4 seconds later it is 3 deg and rpm 1231, it stays at 3 deg for about 17 seconds and the rpm slowly moves down to around 900. The timing then goes to 6 deg, 3/4 seconds later 7.5 deg, 3/4 seconds later 9 deg, 3/4 seconds later 10.5 deg.
All the time during the timing being at 3 deg the engine runs rough. As soon as the timing gets back up above 10 deg it runs smooth and doesn't miss if you put it in drive.
All sensors are working according to the monitor.
Any help would be appreciated.
Thanks, Lee Jackson
Wednesday, April 27th, 2011 AT 4:53 AM