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Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 14479
Experience:  Certified on Onan and Generac generators
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Working on a onan 6.5 nhm-fa26116h. Its a lp unit. It will

Customer Question

working on a onan 6.5 nhm-fa26116h. Its a lp unit. It will not start without physically choking the unit. after it starts I get a rough idle but seems to load ok other then a heavy un burnt lp smell.
Submitted: 5 months ago.
Category: Small Engine
Customer: replied 5 months ago.
Worked on it through the day and it still seemsto be a fuel issue. If I close down the air inlet with a rag it will smooth out the idle. The lp carb has no adjustment other then idle.
Expert:  Hank F. replied 5 months ago.

This sounds like you might have a bad demand regulator.

The first thing you need to do here is to have the fuel system pressure tested, to ensure the regulator is putting out enough fuel.