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Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 14896
Experience:  Certified on Onan and Generac generators
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Have onan engine that back fires and will not start. has

Customer Question

have onan engine that back fires and will not start. has good fire and fuel. timming marks are right
Submitted: 1 year ago.
Category: Small Engine
Expert:  Hank F. replied 1 year ago.

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

You didn't mention what model engine this is, but I have never heard of an Onan that sets valves at .003"/.015". You probably need to double check the specs.

The backfiring could be a sign of misadjusted valves, misadjusted points (if your engine has them), or a bad carburetor.