Generator Issue

I would also not rule out the electric fuel pump that feeds the injection pump. Easy to fix and easy to overlook.

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Originally Posted by Jerry Winchester

I would also not rule out the electric fuel pump that feeds the injection pump. Easy to fix and easy to overlook.

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Next on the list - new filters no help.

Edit - anyone have a reference for the fuel pump for a Kohler 20EORZ w/ Yanmar engine? Been looking for an hour on internet with no luck - numbers smeared off unit on my genset. Guess I can call Kohler Monday.

Gordon, give me a call in the morning, I will look on mine. I will be at the bus by 6:00AM CA time.

Jerry Winchester may have it, My Kubuto had a small SW diaphragm pump that fails very similar to what you are seeing. Started and ran rough with load, came out of it and ran fine only to repeat and get worse. Put a new electric pump that is the new replacement model on the generator, opened the bleed on the fuel block for a few seconds and it runs like it should.

About a $110.00 for the new pump. http://www.autoperformanceengineerin.../fr_pumps.html
I think I used the FRB-11.

Will do - thanks Kevin.

Thanks Mike. I am hopeful that will be the solution. Ran it for a while tonight after changing out fuel filter and if anything, it is getting worse.

It may not relate, but I had a wouldn't-stay-running problem with the generator and it was loose and frayed wires at the fuel pump and a cracked fuel line. Minor things, big effects. I was clueless, but a Kohler shop had no problem making the diagnosis.

Gordon, my coach # falls between yours and Kevin's so if you need to varify something or double check let me know and I'll check mine also. We are in Yuma and staying in the bus. Ph 253-820-9400

Gordon, There is a Kohler dealer we dealt with in Phoenix when our former XLII #740 had a fuel pump issue. Its called Loftin equipment

http://www.loftinequip.com/about.asp

Can't rremmber the number, but Pacific Detroit Diesel is where Marathon was getting the Kohler gensets. Call Angie in service and see if she can get you Jody's number. He was instrumental in satisfying our genset issues.

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Originally Posted by jelmore

It may not relate, but I had a wouldn't-stay-running problem with the generator and it was loose and frayed wires at the fuel pump and a cracked fuel line. Minor things, big effects. I was clueless, but a Kohler shop had no problem making the diagnosis.

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Gordon,

I had the same thing as Jim, but the only difference was my wires going to the electric fuel pump were loose. Once they were tightened up, it ran fine.

Thanks Mike, that's one hell of a pump if it does all they claim.

JIM