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Old 05-03-2013, 02:04 PM   #15
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1996 30' Land Yacht
mesa , Arizona
Join Date: May 2013
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Thanks for the responds guys. I will start by trying to get fuel to the pump first and then worry about getting a fuel pump. I will keep you guys posted.


Norm
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Old 05-03-2013, 02:07 PM   #16
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1996 30' Land Yacht
mesa , Arizona
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Thanks for the responds guys. I will try getting fuel to the pump first and then see if I need to get a new fuel pump. I will keep you all posted.


Norm
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Old 05-03-2013, 03:00 PM   #17
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1992 36' Land Yacht
Grayson , Georgia
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Disconnect the fuel line going to the pump first and see if you get fuel there. If fuel does not run out the line, then draw a vacuum on the line and see if you can get fuel to run freely. You can use a longer piece of clear tubing and draw a vacuum with a hand vac or your mouth until you see fuel in the line. Drop the line low and into a jar. Verify that the fuel runs freely with a natural siphon. Once flowing there shouldn’t be any air in the fuel. Keep drawing fuel until you get fresh fuel out. If you can't get fuel out, then it may be an obstruction in the fuel line or a problem with the dip tube in the fuel tank. Once you have fuel coming out of the fuel line, then reconnect the line and see if you get fuel with the pump. If no fuel then disconnect the fuel filter and see if you can get fuel that way. If no fuel then the pump is shot.
Be careful of getting the cheapest pump from an auto parts dealer. Although the pump does not have to provide a large volume of fuel it does need to be the correct pressure. Too much and it will over whelm the float. Too little and you'll run lean under load. The rated pressure should be around 4-6psi. Many have had good success using the automotive pumps. Carter makes one that is really a good quality pump that looks OEM to Onan’s pump but more like $80 v/s Onan’s $225. You could also go with a Mr. Gasket vibrator pump for around $40 but be prepared to replace it more often.
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Old 05-14-2013, 02:15 PM   #18
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1996 30' Land Yacht
mesa , Arizona
Join Date: May 2013
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Well everyone. After doing all your tips on the generator. I found out the fuel pump was bad. I replaced it and its up and running like a champ again. Thanks again to everyone with the helpful tips.

Norm
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Old 05-14-2013, 03:57 PM   #19
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1992 36' Land Yacht
Grayson , Georgia
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Glad to hear it's up and running. I'd give it a good load test now. Get as much of the rated load on it as you can. I picked up a few 1500W (qty 4) heaters just for that purpose. Run it in for at least an hour.
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Old 04-21-2015, 03:46 PM   #20
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generator

my onan 5000 is spitting fuel out of the carb, getting way too much fuel, if i clamp the fuel line with vise grips its runs/ crappy but it runs, any advice?
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Old 04-21-2015, 04:12 PM   #21
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2000 31' Land Yacht
Central , Florida
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Sticking needle valve staying open or float saturated so that needle valve can't close would do that. Try the seafoam in a jar of fuel and run it into the carb, might free it up other wise you are looking at a rebuild for the carb.
Read all the previous posts on this site about onan should solve your problem. Onan+gas + alcohol = problems for gaskets and crud in carb bowl.
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Old 04-22-2015, 05:33 PM   #22
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1998 31' Land Yacht
lafayette , Colorado
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Hmm...So I guess mine (98 LY MoHo) must have been optional? It runs on propane.
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