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a new one on me (video)

Discussion in 'XJ Technical Chat' started by jason702v, Mar 13, 2011.

  1. jason702v

    jason702v Member

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    jason702v, Mar 13, 2011
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  2. Mr.Etobicoke

    Mr.Etobicoke Member

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    jason702v

    What is your battery voltage while the engine is running?

    Kenneth
     
    Mr.Etobicoke, Mar 13, 2011
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  3. PainterD

    PainterD Active Member

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    Looks to me like a bad sparkplug wire.
     
    PainterD, Mar 13, 2011
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  4. jason702v

    jason702v Member

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    The voltage is about 13-13.1. Its cylinder 2 and 3 so I don't think its a plug wire
     
    jason702v, Mar 13, 2011
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  5. jason702v

    jason702v Member

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    could it be the black box? does it do something to the spark above idle? like advance/retard the timing that might be out on mine. this is the third black box ive put on this thing. ran ok but only put maybe 10-20 miles on it then it started doin this.
     
    jason702v, Mar 14, 2011
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  6. waldo

    waldo Member

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    swap out your coils this will help eliminate everything downstream like the box and pickup if the other coil does the same thing then its connections wires black boxes pickups etc.
     
    waldo, Mar 14, 2011
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  7. jason702v

    jason702v Member

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    Good idea. If I swap the coil leads it should tell me if its the coil or somethin else. Ilk try that when I get home
     
    jason702v, Mar 14, 2011
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  8. Ledicott96

    Ledicott96 Member

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    sounds like you have a ratteling cam chain?
     
    Ledicott96, Mar 14, 2011
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  9. jason702v

    jason702v Member

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    Ya I was kinda gettin to that. I've looked how to do that in my book but wasn't too clear on it. Any explanations?
     
    jason702v, Mar 14, 2011
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  10. Ledicott96

    Ledicott96 Member

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    Sorry can not help with that, as my 81 750 had new chain and tensions, and 83 750 seca has never rattled. There will defiantly be some one who can help, if not already a thread on it.

    Al
     
    Ledicott96, Mar 14, 2011
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  11. jason702v

    jason702v Member

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    well got the chain tightened up and got rid of the noise but still no spark when i give it throttle. its weird in that the problem will come and go. it will not run for crap once then the next day it will run great. im not even moving it, just startin it a couple times a day. any ideas?
     
    jason702v, Mar 15, 2011
    #11

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