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Strange find from previous owner

Discussion in 'XJ Technical Chat' started by Rowan Mickan, Apr 6, 2018.

  1. Rowan Mickan

    Rowan Mickan New Member

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    ... found some paper work hidden in an envelope inside of the tub of spare parts I got with my 650.

    It has a record of his valve clearances, jets etc.

    Anyways, I found that he had been running a different Spark plug on carb no.4 .

    I'll add a photo so you can see. All plugs were bp7's when I got the bike and have been replaced. However I'm just wondering why this was done?
    Also the main jet on carb no4 was substantially smaller at running a 110?? Any thoughts ? I'm just to embark on church of clean as I have read through it 3 times now and am getting all the bits together ready
     
    Rowan Mickan, Apr 6, 2018
    #1
  2. Rowan Mickan

    Rowan Mickan New Member

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    Photo here
     

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    Rowan Mickan, Apr 6, 2018
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  3. Jetfixer

    Jetfixer Well-Known Member

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    Could have been what he had ..the PO on mine had 2 NGK and one split fire plug and one champion ...so who knows. Also if I remember the 6 is a hotter plug so might be due to oil consumption ...but I could be wrong it could be a colder plug . :D:rolleyes:
     
    Jetfixer, Apr 6, 2018
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  4. MattiThundrrr

    MattiThundrrr Not a guru

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    Perhaps the spark swap was an attempt to fix whatever running issues might have come up due to the different jet.
     
    MattiThundrrr, Apr 6, 2018
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