Onan 4000 Revs up and Down
I have been having issue with my generator, onan microlite 4000. Has gas fuel pump works spark plug new filters are good. Took the carb off and it is clean. Nothing gummed in bowl or jets from what I ...
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I believe the altitude adjustment on the Onan carburetor works similarly to a choke on a lawn tractor, though not as predominantly. It changes the air-to-fuel ratio. I wonder if it has a partial butterfly valve, as I have never seen it taken apart.
When the altitude is set appropriately, our Onan 4000 Micro-Quiet likes to wander RPMs until warmed up and under load. But we have never had it run a while and then stall unless we ran out of fuel.
It is not supposed to run out of fuel until the main chassis fuel tank reads 1/4 full. But our generator runs out at 1/3.
When the altitude is set appropriately, our Onan 4000 Micro-Quiet likes to wander RPMs until warmed up and under load. But we have never had it run a while and then stall unless we ran out of fuel.
It is not supposed to run out of fuel until the main chassis fuel tank reads 1/4 full. But our generator runs out at 1/3.
