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Spark

Discussion in 'XJ Technical Chat' started by Loganxj, Apr 1, 2022.

  1. Loganxj

    Loganxj New Member

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    Hey guys, I have a question, when I flip my Killswitch is the plugs supposed to spark? I've never seen this before and just curious thanks!
     
    Loganxj, Apr 1, 2022
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  2. bensalf

    bensalf Well-Known Member

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    yes, that can happen, the spark comes from the stored energy in the coils, flipping the kill switch, is similar to the breaker plate passing the pick-up coil .
     
    bensalf, Apr 1, 2022
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  3. Leif Harrington

    Leif Harrington New Member

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    Having a similar issue: while cranking over I have no spark, but when I I flip the kill switch it will spark (only once but a spark none the less).

    Checked and charged battery, it's good. So could it be the starter is robbing to much of the power for the tci to operate then when switched off theres a surge of power causing a single spark at the plugs??

    Any advice/help is greatly appreciated, thank you.
     
    Leif Harrington, May 5, 2022
    #3
  4. Fuller56

    Fuller56 Well-Known Member

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    Yes, that is exactly correct. Put a voltmeter on your battery while operating the starter to verify the voltage. The TCI requires at least 10 volts to fire the ignition. It is not unusual for the battery to have enough energy to operate either the starter or the ignition but not both. Have you tried push starting the bike?
     
    Fuller56, May 5, 2022
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