run problem with Onan Marquis 5000 BGM
fuel pump approx 6months old - tested pumping good fuel filter NOT clogged - it is passing fuel, yes enough fuel yes it has enough oil it will start , run a few seconds quit im thinking stuck/...
Forum Discussion
I had the exact same problem and fixed it with a new carburetor. But with the Onan, it can be a number of things. They are famous for the oil and overheat sensors going bad. The thunk sound when trying to start might be a low battery. Chuck
