Onan 5500 gas gen

[dgantz]

Running yesterday with a load for about 2.5 hours when it just died. Found fuel bowl empty, will fill if I prime it then will run until bowl is empty. Any thoughts on this? Looks like bad fuel pump to me.

[JimD]

My son had to replace the fuel pump on his 5500 because it had become very weak. As far as yours is concerned, I would put a volt meter across the leads and verify that voltage is there when the unit is running. I assume the priming function sends power to the pump by bypassing the normal run mode. Just a thought.

Also, don't forget the fuel filter.

[Randy]

How is the fuel level on the motorhome? The Gen will not pull fuel when the vehicles tank is below 1/4.

[Shadowchaser]

If you hear the pump "knocking" during priming, it is probably good.
Check for any pinholes or cracks in the fuel line supply side.

[Shadowchaser]

If you hear the pump "knocking" during priming, it is probably good.
Check for pin holes or cracks in supply side fuel line.