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Ask Hank F. Your Own Question
Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 14484
Experience:  Certified on Onan and Generac generators
19372534
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I have an Onan gen set here that has a ford diesel engine

Customer Question

Hi ,
I have an Onan gen set here that has a ford diesel engine model # ***** F-6005-A 30-31F
With a P5012/3 Bosch fuel pump
I am having trouble with the governor it lopes quite a bit especially when there is no load, do you have any onsite?
Submitted: 11 months ago.
Category: Small Engine
Expert:  Hank F. replied 11 months ago.

Hello, my name is ***** ***** I am going to assist you with this.

What is the model number of the genset itself?

Customer: replied 11 months ago.
The Onan model #45.0 DEF-3R/11015F
and the Serial #(###) ###-####I hope this helps.
Expert:  Hank F. replied 11 months ago.

This is an engine that I am not familiar with. However, being an Onan technician, I do have a copy of the actual Ford service manual for it.

If you are interested, I can upload a copy for you. Just let me know.

Customer: replied 11 months ago.
The fuel pump has been rebuilt , but the governor seems to not be keeping it running steady at the selected rpm.
The service manual might help I would like to take a look at it.
Thanks
Expert:  Hank F. replied 11 months ago.

Ok.

I have uploaded the manual for you.

Click here to download it.

Have a Merry Christmas.

Customer: replied 11 months ago.
Thanks for the manual, I am still trying to find the answer to this problem, thanks .
Expert:  Hank F. replied 11 months ago.

As with any running issue, start with the fuel. Make sure the fuel is fresh, not stale.

Make sure the fuel filter is clean, and that all fuel line connections are tight (no leaks).

Once fuel is verified good, the next thing is to test the injection system. You have to know that the injector pump and injectors are all working properly.

Then check/adjust the governor.