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Coils

Discussion in 'XJ Technical Chat' started by Paul Albert, Mar 6, 2025 at 7:44 PM.

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  1. Paul Albert

    Paul Albert New Member

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    Location:
    Perth Western Australia
    XJ 900 Diversion

    I think that this bike has been messed with. Its new ( to me ) and i havent tried to start it yet.

    But the previous owner said it was running rough.

    I am unsure that the coil wires are correct and if the HT leads are in the correct sequence.

    I would be very grateful for any advice.

    If its possible, could someone email me at ptdx20@gmail.com

    Thanks again everyone.


    Paul
     
    Paul Albert, Mar 6, 2025 at 7:44 PM
    #1
  2. bensalf

    bensalf Well-Known Member

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    the ignition coils are , L/H side coil (with the orange and red "with white tracer" primary wires, fires the no's 1 and 4 plugs
    R/H side coil ( with the grey and red "with white tracer " primary wires, fires the no's 2 and 3 plugs

    it makes no differance which way round you put the 2 plug wires of each respective coil as the Yamaha system uses the "Wasted Spark " system
    i.e. the plug also fires on the exhaust stroke as well as the compression stroke
     
    bensalf, Mar 7, 2025 at 3:55 PM
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    Timbox and Franz like this.

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