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Old 09-26-2012, 10:01 AM   #1
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generator/fuel problems

has anyone experienced fuel not getting to generator on National gas rv's?
my 2000 Sea View doesn't get fuel to generator unless I run the fuel pump manually for over 5 minutes. I have been lately taking fuel line off of fuel filter (new one by the way) & hooking up a primer pump to get fuel from tank to run onto ground before reconnecting to fuel filter. generator runs fine after I get fuel in fuel line. would like to install some sort of primer bulb in line. (NAPA) no longer sells one. any other ideas from someone?

yes, problem exists even with full fuel tank.

fuel line needs to be primed every day as line goes dry overnite.

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Old 09-26-2012, 10:09 AM   #2
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Sounds like an air leak someplace between the tank and the carburetor. If it won't draw fuel from an external can, it may have a crack in the rubber fuel line.


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Old 09-26-2012, 10:15 AM   #3
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What is the error code ( the start rocker switch flashes a primary code ( 1,2 or 3 flases), pressing it once afrter it flases get to a two character secondary code - like 3 flashes and 1 flase = 31)

It may be that the controler is sensing a problem with the parwe production and is shutting down the motor. The code will tell the tail.
and you cah get the manual from Cummings/Onan support section of thier web.
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Old 09-26-2012, 10:23 AM   #4
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On the generator your switch is a rocker switch push the top to start, push and hold the bottom of the switch t o start primer action. Try 15/20sec and see if that works.
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Old 09-27-2012, 08:14 AM   #5
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Originally Posted by Dunner View Post
Sounds like an air leak someplace between the tank and the carburetor. If it won't draw fuel from an external can, it may have a crack in the rubber fuel line.
X2 and very common with these. May have to drop the tank and run a new line or maybe it's a pin hole in the internal pickup, like I suspect with mine. Right now, I'm running off an independent tank and one could try this temporarily, even with a milk jug to isolate the problem.
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Old 09-27-2012, 01:21 PM   #6
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I just fixed this issue on my 99 Sea View a few weeks ago, you probably won't like my response.

To make a long story short, I had to replace the rubber line from the tank to the generator, which is no small task. Mine was rotting and had several leaks in it and the fuel pump could no longer get fuel from the tank.

I had to remove three of the rear tank straps, loose the forward one, remove a frame brace near the rear of the tank and it was not alot of fun. I was able to lower the rear of the tank just enough to get in there. Then you have to remove the fill and vent hoses. The generator fuel outlet is in the middle top of the tank so it's very hard to reach with your hands.
The levelers make getting to one of the tank straps a real challenge as they cover some of the strap bolts. Took me a solid 4 hours to fix this and I'm a pretty good around a tool box.

My suggestion would be to take the fuel hose off at the fuel pump and blow into it. Have another person remove the fuel tank cap and listen to see if bubbles are making it into the tank, then also listen if they can hear air coming out at all in the line going to the tank. Move the line around a bit to see if there is hissing.

Installing a primer bulb is probably not a good idea. If the line is starting to fail, most likely it is leaking and eventually you could have a fire. I would suggest fixing it right before you have more serious problems.

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