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Joe
Joe, Marine Mechanic
Category: Small Engine
Satisfied Customers: 7136
Experience:  ASE, electronics, Marine inboards and electronics, automotive drivability, all around repair tech,
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I have an Onan generator microlite 4000. it wasn't running

Customer Question

I have an Onan generator microlite 4000. it wasn't running so determined the fuel pump was bad so replaced it and the fuel filter, Now it gets no fire to the spark plug.HELP Thank you
JA: What's the make and model of the generator? And can you guesstimate how old it is?
Customer: IT IS AN ONAN MICROLITE 4000 APPROXIMATELY 15 YEARS OLD. M0DEL # 4KYFA26100H.
JA: Do you plan on doing the work yourself?
Customer: YES IF POSSIBLE.
JA: Anything else we should know to help you best?
Customer: NOT THAT I KNOW OF.
Submitted: 2 months ago.
Category: Small Engine
Expert:  Joe replied 2 months ago.

Hello,

Thank you for allowing me to assist you, my name is Joe and I will be happy to assist you with your concern today.

Have you checked the oil level and sensor?

Thanks,

Joe

Customer: replied 2 months ago.
oil level is good , changed small blue box with spark plug wire coming out of it( I think it is the coil) still no spark .
Expert:  Joe replied 2 months ago.

I have a service manual for this unit so that you can go through the trouble shooting steps to diagnose the issue, start at the coil checking power and switching ground.

http://www.rvwithtito.com/download/Onan4000MaintenanceManual.pdf

If you have any questions or run into a problem please let me know.

Thanks,

Joe