1. Some members were not receiving emails sent from XJbikes.com. For example: "Forgot your password?" function to reset your password would not send email to some members. I believe this has been resolved now. Please use "Contact Us" form (see page footer link) if you still have email issues. SnoSheriff

    Hello Guest. You have limited privileges and you can't "SEARCH" the forums. Please "Log In" or "Sign Up" for additional functionality. Click HERE to proceed.

Ignition Coil Measurements Replace or not?

Discussion in 'XJ Technical Chat' started by Dark-Farmer, May 31, 2024.

  1. Dark-Farmer

    Dark-Farmer Member

    Messages:
    79
    Likes Received:
    3
    Trophy Points:
    8
    Location:
    Vancouver Canada
    So I have checking my ignition coils yesterday and the primary test measured 2.8 ohms and 2.9 ohms. As per the thread I found on here should be 2.5 ohms +/- 10% for 2.25 to 2.75 ohms

    The secondary measurement was 11k something so right in the middle of the range.

    So I'm out of that range, but it is close.
    Is this a replace moment? or an you'll be fine moment?

    (shout out to Dan Gardner for the great write up)
    https://xjbikes.com/forums/threads/how-to-test-ignition-coils-and-plug-caps.130696/
     
    Dark-Farmer, May 31, 2024
    #1
  2. Dave in Ireland

    Dave in Ireland Well-Known Member

    Messages:
    596
    Likes Received:
    339
    Trophy Points:
    63
    Location:
    Ireland
    Nothing to worry about.
     
    Dave in Ireland, May 31, 2024
    #2
  3. bensalf

    bensalf Well-Known Member

    Messages:
    1,344
    Likes Received:
    277
    Trophy Points:
    83
    Location:
    yorkshire ,england
    but did you take away the resistance of the test leads?
    put both test leads together and note the resistance, then take that away from the coil resistance, that should bring your results into spec
     
    bensalf, May 31, 2024
    #3
    k-moe likes this.
  4. Dan Gardner

    Dan Gardner Well-Known Member Premium Member

    Messages:
    1,358
    Likes Received:
    664
    Trophy Points:
    113
    Location:
    Minneapolis, MN
    I guess it's technically out of spec, but not ridiculously out of spec.

    Is there a problem you are chasing down such that you might suspect the coils?
     
    Last edited: May 31, 2024
    Dan Gardner, May 31, 2024
    #4

Share This Page