Onan 4000 Generator Won't Start
New (old) RV. Working through the various quirks. When you try to start it, it usually doesn't do much. Every so often tries to kick over for a second. Has a fuel filter (clear) near the electric ...
Forum Discussion
Pic of his pump:
That's about a $40 part. But what it fueling? Is this "tank" part of the RV, part of the generator, a separate tank?
Can you furnish Make Model, Spec if ONAN, Year of genset?
Back to the Pump, here's a Link to Facet-Purolator
Yours looks like a Cube Electronic. Genset probably wants a low pressure 3-5 PSI model vs the higher 5-7 PSI and at least ONAN likes one that won't allow fuel to flow through it when it isn't running. The F-P site calls that feature PSO (Positive Shut Off, and also Anti-Siphon).
Be careful if you get this thing running. I'm pretty sure it's a constant-RPPM generator. This means that it runs at a steady RPM (and I'm guessing 1800) whether no load or full load. Only difference is throttle opening. THIS MEANS that if you goose it up by grabbing the throttle linkage, the voltage will go way above the 120 it's meant to deliver. Pretty much anything connected and ON will be damaged.
That's about a $40 part. But what it fueling? Is this "tank" part of the RV, part of the generator, a separate tank?
Can you furnish Make Model, Spec if ONAN, Year of genset?
Back to the Pump, here's a Link to Facet-Purolator
Yours looks like a Cube Electronic. Genset probably wants a low pressure 3-5 PSI model vs the higher 5-7 PSI and at least ONAN likes one that won't allow fuel to flow through it when it isn't running. The F-P site calls that feature PSO (Positive Shut Off, and also Anti-Siphon).
Be careful if you get this thing running. I'm pretty sure it's a constant-RPPM generator. This means that it runs at a steady RPM (and I'm guessing 1800) whether no load or full load. Only difference is throttle opening. THIS MEANS that if you goose it up by grabbing the throttle linkage, the voltage will go way above the 120 it's meant to deliver. Pretty much anything connected and ON will be damaged.
