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Which spark plugs do I need?

Discussion in 'XJ Technical Chat' started by JMTaco, Oct 4, 2018.

  1. JMTaco

    JMTaco New Member

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    So I needed new spark plugs so I did a bit of research and bought what was recommended. They threaded in fine but the cap wouldn’t fit over the top of the spark plug. What’s spark plugs will actually fit the thread and the cap?

    1982 XJ650 Maxim

    Attached is a picture of what I bought and didn’t fit.
     

    Attached Files:

    JMTaco, Oct 4, 2018
    #1
  2. Door dude

    Door dude Active Member

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    The top of the plug has a silver cap on it, take a pair of pliers and twist it off. under the cap is athreaded post, the wire boot will fit then.
     
    Door dude, Oct 4, 2018
    #2
  3. fiveofakind

    fiveofakind Well-Known Member

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    +1 on the above....door dude is absolutely correct...you bought the correct plugs
     
    fiveofakind, Oct 4, 2018
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  4. JMTaco

    JMTaco New Member

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    Well it’s always nice to feel stupid everyone once and a while. I tried pulling them off but I guess I didn’t try hard enough, thanks guys..
     
    JMTaco, Oct 4, 2018
    #4
  5. Jetfixer

    Jetfixer Well-Known Member

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    You can also use Autolite AP63 plugs , as long as you have NGK 7ES this is correct heat range
     
    Jetfixer, Oct 5, 2018
    #5
  6. fiveofakind

    fiveofakind Well-Known Member

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    I am running NGK BP7ES which is the 1034 plug....
     
    fiveofakind, Oct 5, 2018
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