Sounds like a shut down system issue..maybe a bad sensor as posted. Check operating temp under normal load with an infrared thermometer...they are a GREAT diagnostic tool. Is the temp you see with the infrared at the specified temp??? That's how I found my old Onan was running thirty degrees hot...clogged heat exchanger was the cause...then you can bypass any temp shutdown sensor and be SURE it's the sensor and not the actual temperature causing the problem... Another possibility is a bad connection...a loose wire or broken wire....they can cause strange intermittent problems....It does NOT sound like a fuel issue... ------------------------------------------------------------------------ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now.