Author Suddenly won't start  (Read 6003 times)

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  • Offline zed9   us

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      #70

    Offline zed9

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    Re: Suddenly won't start
    Reply #70 on: Jan 22, 2023, 02.28 pm
    Jan 22, 2023, 02.28 pm
    *Originally Posted by Smoky [+]
    Haven't had any time last coupla weeks to further diagnose my no start issue.  While I have it apart I'm gonna double check timing then try to start again
    If it starts while priming then your timing is good.
    Something happens once primed or when the ignition is turned on and takes as long to happen as the priming sequence. Something with the throttle plates?
    Has your ecu ever been flashed? (I can’t remember if you discussed this).

  • Offline Smoky   us

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    • #71

    Offline Smoky

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    Re: Suddenly won't start
    Reply #71 on: Jan 26, 2023, 11.27 am
    Jan 26, 2023, 11.27 am
    Timing is dead on according to the manual and timing marks.Bike won't hit at all. Not been flashed.
    Last Edit: Jan 26, 2023, 11.28 am by Smoky

  • Offline zed9   us

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      #72

    Offline zed9

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    Re: Suddenly won't start
    Reply #72 on: Jan 26, 2023, 01.18 pm
    Jan 26, 2023, 01.18 pm
    *Originally Posted by Smoky [+]
    Timing is dead on according to the manual and timing marks.Bike won't hit at all. Not been flashed.
    Just spit-balling here…

    It’s almost as if, after priming, there is no fuel pressure to the injectors or there is fuel pressure but the ecu is not asking them to spray. Or the spark plugs aren’t firing. The problem is definitely electronic in nature.

    Have you confirmed spark AFTER the initial priming sequence has ended?
     To do this you would have to prime/start the engine then with the key still in the "on" position (so as not to initiate another priming sequence), pull a plug and crank the engine to verify you still have spark.
    If you try this you must stuff a rag over the spark plug hole because if there is spark and gas vapor, an explosion could result.

  • Offline GatorZ   us

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      #73

    Offline GatorZ

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    Re: Suddenly won't start
    Reply #73 on: Jan 26, 2023, 03.04 pm
    Jan 26, 2023, 03.04 pm
    Excuse my ignorance. I haven't read the whole thread.
    But has he tried a scan tool  OBD2 scanner?

     



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