Onan 4000 Rv Generator Fuel Pump

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Onan 4000 rv generator fuel pump.

From the three steps you performed it sure sounds like the pump is toast. Onan 4000 generator fuel pump replacement and diagnosis. So i decided to do the fuel pump test just after the generator dies. These seem to be from the late 1990s to the early 2000s.

That was my plan. Onan 4000 4kw gas rv cummins generator electric fuel pump carbole petrol gas diesel fuel transfer pumps for airtex e11007 a029f889 149 2311 149 2311 02 149 2311 01 149231101 e11007 4 4 out of 5 stars 30. My rv uses a cummins onan fuel filter part 0149 2457. Onan fuel pump airtex e11007 onan fuel filter onan air filter 24 inches of fuel line 1 4 inch inside diameter id teflon plumbers tape fuel hose clamps testing the fuel line some lazy daze rvs have had a fuel line issue.

Probably an obvious statement but since there is only one wire 12v positive on the pump the metal frame of the pump must be connected to the negative terminal on the battery for the pump to run. I started up the generator and waited for it to die. With this in mind it is a good idea to conduct a simple test. The fuel line connects diretly into th fuel filter which can be screwed off of the fuel pump similar to how i show in this article.

When to test the fuel pump. I put a small amount of permatex high temperature thread sealant at the base of the threads on the new fuel filter. Joebruns typically for an onan 5500 generator they mounted the fuel filter fuel pump combination on the underside of the motorhome directly below the generator. The fuel pump on our onan 4000 makes a buzzing sound when it runs.

I suspected that the fuel pump would function just fine if tested when the generator is cooled down. The new fuel filter will just fit inside the oval hole allowing it to be connected to the fuel pump. You should check your rv s manual for the exact part numbers needed for your specific onan generator. Onan qg 4000 for rv frequency hz 60.

Certification tier 4 final stage iv. Sure enough it died after about 20 minutes.