Onan Generator Problem Solved
My Onan 5500 Marquis Gold generator would run for about 20 minutes and then quit. I tried replacing the fuel filter without success. I then rigged a gas supply directly to the carb (threaded the old f...
Forum Discussion
427435 wrote:Rustydog wrote:
Ethanol softening the fuel pump diaphragms.
Another cheap and inaccurate shot at E10. If the diaphragm was bad, it wouldn't have run for 20 minutes and probably wouldn't even have started.
I also wonder if the fuel pump was really bad or the fuel line connections were sucking air after things warmed up. Replacing the fuel pump would have also dealt with the fuel line connections.
I don't know why the pump was bad, but it was bad. I reinstalled the old pump while waiting for the replacement part and it continued to******out after working for a while. No problems with the new pump installed so I'm thinking that maybe the pump had a problem. I keep my fuel stabilized when the coach is not in regular use and store with as much non-ethanol gas as I can find nearby.
