Replaced main relay-no luck. That's what I thought it was also. Iwill try to better explain the problem. The problem started with not starting - next day it started fine,then every so often it would fire but not run. Then a few days later same thing - fire then immediatly quit, after trying several times it started and continued to run while chatting with a passerby it died and will fire but not run.So far changed fuel filter and main relay with no luck. Any suggestions ? thanks-Jim