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Discussion in 'Motorcycle Tech Talk' started by Les Saunders, Feb 17, 2018.

  1. Les Saunders

    Les Saunders New Member

    Feb 17, 2018
    Likes Received:
    Hi, I am having a problem, jumped on my GR650X primed and half choke as usual pressed the start button then a big backfire the motor won't turn over and the starter motor making a humming sound, battery is showing 12.85 volts I have ignition and lights, I tried to turn the engine over with the wheel in gear with the plugs removed but it won't budge, could I have damaged something internally, only got 35,000 klms on the clock and owned my bike from new always been serviced new oil and new filter each service.
  2. Red Rider

    Red Rider Well-Known Member

    Jul 5, 2006
    Likes Received:
    Churchill County, NV
    When trying the "in-gear" start, you need to be in no lower than 2nd gear, or it will be a bear to roll-start (and hard on the tires), try 3rd gear first. Generally, a backfire doesn't seize an engine, so from your symptoms I'd still think battery first - how old is the battery? Voltage measurement is only part of the equation, it really is about the amps to turn the starter, most bad batteries will show decent volts, they just can't crank the starter (takes the amps for that).

    That is a classic bike, and a fun ride. Let us know how it goes. Good luck!

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