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Wires were cut to th starting system.i can get it to crank over but no fire to the plugs.

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  • malibu_frank Aug 26, 2010

    onan 6.5nh3cr712014d generator.

  • malibu_frank Aug 26, 2010

    the unit is not in a motorhome at this moment.i just bought it and an\m trying to start it before installing it.i connected the fused wire 0n the generator itself and the fuel pump to a hot battery wire.the engine cranks and the fuel pump runs but no fire to the plugs.the man i bought it from said it was running a few months ago.

  • malibu_frank Aug 27, 2010

    the remote wires are the ones that are cut i think.i am trying to get you some pic. but i am not too good at this.

  • malibu_frank Aug 27, 2010

    there is a control box. i am trrying to get a pic but i am not too good at this.to get it to crank i have to jump the solinoid and use a jumper wire on the fuel pump.

  • malibu_frank Aug 30, 2010

    did you get my pics. of the gen. switch?

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Hello Frank,

Without a manufacturer and model, it will be difficult to sort this out. If you can provide, I can help you much quicker.

Generally, an engine that has an electric start also has a shutdown method as well. This may happen using a button, switch, or be part of the keyswitch. Most engines are turned off / shutdown through the "disable" wire that goes to the ignition module. If this wire is grounded, the module turns off, and the engine slows to a stop. Look for a wire that snakes back under the cooling shroud of your engine. Follow from the shroud until it makes its connection to the harness, then disconnect it. Engine should start and you should have spark.

Note that connecting this wire to the battery very well may damage the coil (burn it out). If the wire that it was connected to has battery voltage on it, the ignition module is likely toast and will need replacement.

Posted on Aug 26, 2010

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  • Sheldon Dedek Aug 26, 2010

    I suspected that this was going to be an Onan. I have several manuals, but it will take a bit to find them.

    In the mean time, got a few questions to help narrow down / isolate where problem lies.

    How are you trying to start the generator? Are you using the switch on the generator itself, or are you trying to use a remote switch at the end of a wiring harness? If using remote, are you able to start it with the switch on the generator?

    When the generator is turning over, are you getting voltage to the fuel pump / propane solenoid?
    Is the choke closing when it is turning over?
    How was everything reconnected? did you try to match colors?

  • Sheldon Dedek Aug 26, 2010

    Are you using the switch to try and start the engine, or are you jumping across the solenoid / hardwiring solenoid to the battery?

  • Sheldon Dedek Aug 26, 2010

    Found the manual.

    Your fuel pump should be connected (eventually) to frame / battery negative. The other wire should goto Terminal 6 on the terminal strip. Also connected to terminal 6 should be the + terminal of the spark coil, as well as the #87 contacts of relays K2 and K3 (the 2 black relays in the control box).

    Tell me what you are trying to work with here. Is there a start switch at all, or are you just looking at a mess of wires where there was a switch before? Do you still have the 6 position plug that connects to the side of the control box, or was it cut as well?

    I can understand that wires were cut to the starting system for the remote panel. Even so, cutting those wires, as long as they are not touching / grounding out, would not stop the generator from being started using the switch on the control panel itself.

    Is the control panel / box missing altogether?

    If you could, take a picture, and attach it to your next comment.


  • Sheldon Dedek Aug 31, 2010

    Nope, no pictures present that I am able to see.

    The biggest problem though, is that you are not engaging the relay that turns on the fuel pump AND enables the ignition. Only the fuel pump is being turned on (forced).


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