haste maker wrote:
No codes...
Yes it will restart in a few minutes not seconds & run 14 hours or more with the A/C off
Odds are you have a defective rubber fuel supply line from the gas tank. It is old and rotted. When under load the Onan uses more gasoline. NOT under load it may have enough gasoline to run. The best way to confirm this is to connect a gallon gasoline can with a short rubber fuel line and retest. IF it runs under load under load, then you need to replace the supply fuel line. If it does NOT stay running check the oil viscosity, and make sure it is correct and the oil is at the correct level. When you do NOT have a fuel supply problem and the Onan dies, it will then restart with in 10 seconds. But taking longer means the onan fuel pump is trying to deliver fuel to an empty carb bowl. Doug