[Larry & Diane]

Have you disconnected the fuel line after the fuel pump and then jump 12volts to it to see if fuel comes out or the pump runs?

I once shot a low pressure of air into the fuel line back to the tank, When I heard bubbles I knew the line was clear.

[Richard]

Mark, as noted it could be a kink or blockage in the line somewhere. Hope so. On mine, the pick-up line for the generator deteriorated inside the tank, causing me to have the problem you are experiencing. It was quite a project to get it replaced due to tank placement on my bus, thankfully covered by warranty.

[Archived]

Hey Thanks ….. Greg and Bryan,

I have replaced the fuel pump and check that I was getting power with just a test light but will actually hookup to a 12volt battery and see what happens. I had also back blown the fuel lines but never thought to listen for the return back into the tank, so I will try that shortly as well. I replaced the filter hoping that was rescricting the flow because I noticed algea in the main engine fuel filter but no luck. Thanks again for the info and I will let you know how it turns out.

Mark

[Archived]

Uh Oh……….Algae in the main fuel filter might be the clue.

Buy your fuel filters in bulk until you cure that problem. You might need them.

I have no clue as to what algaecides work best, but I have read that some don’t actually get rid of algae, but “kill” it, making it slough off the fuel tank walls creating a residue that finds its way into the fuel filters. Folks in the marine business “polish” fuel something you might check out and consider.

Nothing is as much fun as choking off fuel to your engine by plugging filters with algae.

[Archived]

What model coach XL? On mine behind Condenor swing out look upper left corner remove pannel /about dozen screws == access to feed hoses for gen set. front set for generator. FWIW Bob Might be common on all models.

[Archived]

Also verify that you do not have a check valve that is in line near the generator. Some convertors put those in to keep fuel from bleeding off and causing air in the system when running the gen…..

[Archived]

Hey Thanks Guys …..

Thanks for all the help guys !!! I reblew the lines out and now getting fuel. 🙂 The generator will stay running as long as I have the starter switch on but dies immediately when I release. Have you got and ideals ???

Thanks,

Mark

[Archived]

Do you have power to the fuel pump at all times or does it quit when the starter switch is off?

Obviously you do not want the starter engaged when the generator is running so something doesn’t add up.

Usually when something doesn’t work right, especially when it worked well previously the first question was if anyone was monkeying around with it. And if so, what was done?

[Archived]

Hey thanks Jon,

there is only power to the fuel pump when the switch is engaged.

[Archived]

Hey Jon,

I hooked a 12volt battery up to the fuel pump to make sure it was running but the engine still dies immediately after I release the starter switch.

Thanks,

Mark

[Archived]

Prob got a sensor/low oil pressure switch that keeps it from running when it does not have enough oil pressure–or low water level (possible) or even low fuel pressure. FWIW These normaly go to ground.

[Mark]

Hey Robert Thanks …… How do you check the oil pressure switch.

[Archived]

Don’t know what brand you have, but my gen has the auto cut-off for oil pressure and water temp as well as lack of 115 volt output. I had an erratic voltage regulator on the gen side which resulted in occasional gen shut down. If mine doesn’t generate 115 within seconds of starting, it shuts down.

[Archived]

Thanks Joe,

My gen just shuts down immediately after you let off the starter switch. I unhook the fuel pump and it does the same thing until the fuel in the filter runs low. Guys thanks all the help I need to figure out how to check the sendors or replace them.

[Bob]

All you Marathon owners….does anyone know what opens the circuit to shut down the generator. Without knowing my guess is the fuel solenoid is also shutting when the fuel pump loses power.