onan gen.

gone2dadesert wrote:
My onan 5500 has a primer, how old is yours?

1998

You might check or just replace any rubber fuel lines in the genny and between the genny and the fuel tank.

Meny times, pinholes in the fuel lines will let sir in and cause the problems you are having.

When they start letting fuel out, the problems get worse.

My onan 5500 has a primer, how old is yours?

I have the Onan 5500 which does the same thing. I will let the starter rev for about 10 seconds, let it rest about 30, and repeat until it starts. I think the fuel is siphoning back into the main fuel tank leaving the gas line and the carb. dry. I thought about using the squeeze bulb like they have for boats but not sure what problems it might cause.