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Onan generator cranks then wines no start i have a onan generator in my motorhome it stop running now when i try to start in it turns over but does not run what should i9 cheack
Re: Onan generator cranks then wines no start i have a...
Check oil level in the sump
if the oil level is correct check for a problem oil level sensor circuit
it is there to stop the engine when the oil level reaches critical level
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associated problems here are
low oil sensor system faulty
fuel flow insufficient-- blocked fuel tap /filter in tap
problem wiring in the coil area--stop switch
problem ignition control module
take it to a generator repair shop/ mower repair shop for a proper diagnosis and quote
Our motorhome Onan 5000 Marquis generator will turn over and try to start but fails everytime we test. We have primed, gas and oil are fine and we have new spark plugs. We also changed the gas filter on the generator. Any suggestion? Thanks, Loretta
You say Guardian that is Generac???? Then you indicate Onan 4.0KY. If it is a Onan and it stops after you release the button there are a couple of things. 1 st check the brushes, and polish the rotor slip rings, check the resisitance of the rotor, the electrical harness plugs are tight. The control requires a voltage feedback while cranking to engage the PCB run circuits, if all those check out you have a bad control board.
If it stops after 5 minutes whether under load or not, and assuming the air filter, plugs, and fuel filter are new and or clean. The fuel pump is suspect. If it is in a motorhome try conencting it to an external fuel source that is at the same height as the generator. Then higher than the generator. If the problem persisits replace the fuel pump. Or just check fuel pump pressure with a gauge. BE CAREFUL do not use an automotive fuel pump Onan have special low pressure pumps, so use OEM part
Probably need to get numbers off current board first. You can use dinosaur parts as well in most applications and are usually cheaper and longer warranty. See this link. ( http://www.partsfortechs.com/asapcart/generator-parts-c-14.html )
Is your generator wired in to an automatic switchover in the motorhome, or do you have external plug in on face of generator, or near it. The power from the generator needs to be attached one way or another to the motorhome. It may be as simple as plugging the cord from motorhome into it, depending on what set-up you have.
Yes it wil not let you run your motorhome out of fuel they set it up that way so you dont strand yourself you may have a air bubble in the fuel line to the generator try blowing air generator fule line back into the tank
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