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Old 06-16-2011, 04:22 PM   #1
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We just bought a 27 ' Georgie Boy with a 4kw Kohler generator. I can't prime the fuel into the generator for starting. I tried holding the stop button down for 30 seconds or so and no results. The farmer in us dumped a little fuel into the cylinder and it started.The plug was dry when it would not start. Everything seems to function OK and we are really happy to own a class A for the first time.Thanks for your help...Tom/Karen
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Old 06-16-2011, 05:42 PM   #2
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Hi and welcome to

Once you primed it the farmer way, does it now start as expected? Or does it require manual priming each time?
Gary Brinck
Former owner of 2004 American Tradition and several other RVs
Home is in the Ocala Nat'l Forest near Ocala, FL
Summers in Black Mountain, NC
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Old 06-16-2011, 05:47 PM   #3
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We had a Genrac with the same symptoms a couple of years ago... Replaced the fuel pump and that solved the problem. It could also be a fuel filter.
Ronnie (WD5GIC) & Jan (WD5IHU)
2003 Monaco Dynasty Countess 42' w/tag, 2012 Ford Flex

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Old 06-16-2011, 07:56 PM   #4
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first things first, the gennies fuel pickup is usually high in the fuel tank, so the gennie can't use all the gas and leave you stuck.

If there is less than 1/4 tank of gas, the gennie won't run.
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Old 06-16-2011, 11:40 PM   #5
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We had a Generac genset in our other MH. I was really difficult to start from inside the cab. I found that if I started it at the generator it's self I was able to prime it and start it OK. Once it was running, it would be OK until I made a turn, like an off-ramp and then it would quit. Your problem may indeed be a fuel pump lack of pressure, or as stated, not enough in the tank.
Jack & Kay
2015 Allegro 32CA Ford Chassis
FMCA #341229
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Old 06-18-2011, 04:29 AM   #6
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Thanks for the help about the generator.We have a trip planed for this week and we will have electric hook up. We'll try the filter/fuel pump when we return. This weekend will be spent removing 14 years of oxidation.So far so good.The sides were easy however the nose and tail are a bear.Thanks again,Tom/Karen
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Old 06-18-2011, 10:37 AM   #7
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Suspect list in flow order:
Fuel level in tank, Minimum 1/4 tank may need much more depending
Fuel line, Has it gotten religion (Become holy, or holey)
Fuel filter: Clogged, good.

So far you can remove the line (inlet) on the fuel pump put a sucker on it (Fuel transfer hose with bulb hand pump or other device like that) and see if you cn suck fuel out of the tank.. If NO, then try the filter inlet, If still NO you have narowed it down (if yes replace filter)

Next comes the pump itself.. I'm sure you know how to test that.

Then we get into seriious testing.
Home is where I park it!
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Old 06-20-2011, 07:26 AM   #8
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Thanks again.We will get the motor home back from the Pa state inspection tonight. We'll get it figured out with the help that we have gotten. Good people camp.Thanks!! Tom/Karen
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Old 06-20-2011, 07:42 AM   #9
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If your 4Kw Onana is a KJ series the electric fuel pump is prone to failure
While holding the stop button down, do you hear the ticking of the pump?
If not you are out $80.00 for a new pump
Mine lasted <25 hours - yes it was under "warranty" they said I needed to take the rig to the service center 120 miles away, leave it for a few days and then pick it up. The fuel cost alone not to mention the time easily ruled out the "Warranty" response. I ordered the pump and installed it myself.
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