not getting fuel to carb on Onan generator
Onan Marquis 7000 it started rough but it cleared itself out after a minute or so. Ran smooth for 10 minutes under a light load powering a small space heater and running microwave and all the interior...
Forum Discussion
I have an Onan Marquis 4000 on an 02 Fleetwood . . . .
There's a filter on the bottom of the gen housing and a 2nd filter at the carb inlet. NAPA makes a 100% match for these.
It's a long shot but blow into the fuel line and listen for bubbles in the tank (remove fuel filler cap?). I WOULDN'T use a compressor! If there is a clog that might free it up. If there's total resistance might be a total clog. If there is hissing that would be your air leak but you'd need a very quiet environment and a helper with good ears to hear it.
You can also try a big syringe. If you get air and no vacuum 'pop' when you remove the syringe then you know. You could use the syringe to pressurize the line also. I don't know how many psi a syringe typically generates as fuel sitting in the line would affect max pressure.
I would drop the tank when all else fails. That would be a big job to tackle.
Best,
- bob
There's a filter on the bottom of the gen housing and a 2nd filter at the carb inlet. NAPA makes a 100% match for these.
It's a long shot but blow into the fuel line and listen for bubbles in the tank (remove fuel filler cap?). I WOULDN'T use a compressor! If there is a clog that might free it up. If there's total resistance might be a total clog. If there is hissing that would be your air leak but you'd need a very quiet environment and a helper with good ears to hear it.
You can also try a big syringe. If you get air and no vacuum 'pop' when you remove the syringe then you know. You could use the syringe to pressurize the line also. I don't know how many psi a syringe typically generates as fuel sitting in the line would affect max pressure.
I would drop the tank when all else fails. That would be a big job to tackle.
Best,
- bob
