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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 13581
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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We have an older rebuilt Onan in a restored 78 GMC

Customer Question

We have an older rebuilt Onan in a restored 78 GMC motorhome. Generator seemed to work fine til last year. Same scenario each time, runs 12-14 hours no problem. Then, usually on return trip starts ok and will only run 5-10 minutes. Last two repairs were circuit board replacement, then fuse holder replacement. We are using a lead replacement fuel additive for the GM/Olds 455 as its a pre-lead free engine. Could this be fowling out the Onan?
Submitted: 10 months ago.
Category: Small Engine
Expert:  Hank F. replied 10 months ago.

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

Most of the old GMC's had a Power Drawer version of some type.

I will need the model number to be able to help you.