Generator quits after 2 min!
Could use some help as I'm stumped now. I have an Onan Marquis 5500 model# HGJAB-901D First, the genset wouldn't run and I figured out it was the fuel pump- replaced that. I've tried cleaning it ...
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Just looked at a ladies brand new horse trailer with a new onan on top. Would run about 10 seconds and stop.
Had a fuel down in trailer to push to the top fuel pump. Bottom would keep pumping but the top would not keep pumping. Turns out it was a bad ground to the the top fuel pump .. Now that ground is under the computer with a lot of wires on the stud . I took them all loose and they were clean so I kind of repositioned that gr wire and tighten them back up and it was good to go.
I,ll reread your thread to see which gen you have we need your full model number to see what you have . It could be a lot of things.
Had a fuel down in trailer to push to the top fuel pump. Bottom would keep pumping but the top would not keep pumping. Turns out it was a bad ground to the the top fuel pump .. Now that ground is under the computer with a lot of wires on the stud . I took them all loose and they were clean so I kind of repositioned that gr wire and tighten them back up and it was good to go.
I,ll reread your thread to see which gen you have we need your full model number to see what you have . It could be a lot of things.
