Thread: No Spark

  1. No Spark

    I was driving my 85 cj7 a few days ago and it died while driving. Wonít start. Getting fuel to the carb. Not getting any spark. Power to the coil. Replaced the dust cap, rotor and pick up module. Tried another coil. Still no spark. Verified that there is continuity in the spark plug cables.

    Holley 390
    DUI HEI ignition

    Any suggestions for what I should check next. Iím not a mechanical genius and Iím kinda baffled.





    Sent from my iPhone using Jeepz.com mobile app

  2. #2

    Re: No Spark

    Quote Originally Posted by DrG View Post
    I was driving my 85 cj7 a few days ago and it died while driving. Wonít start. Getting fuel to the carb. Not getting any spark. Power to the coil. Replaced the dust cap, rotor and pick up module. Tried another coil. Still no spark. Verified that there is continuity in the spark plug cables.

    Holley 390
    DUI HEI ignition

    Any suggestions for what I should check next. Iím not a mechanical genius and Iím kinda baffled.





    Sent from my iPhone using Jeepz.com mobile app
    Dust cap? Dang auto correct. Replaced distributor cap.


    Sent from my iPhone using Jeepz.com mobile app

  3. #3
    Join Date
    Feb 2009
    Location
    Dayton Ohio Area
    Posts
    5,170

    Re: No Spark

    There is a sensor called a crank sensor. If it dies it affects starting like you describe. You may not get any warning it's failing. If you replace it use oem manufactures and be sure the paper spacer gasket is on there when you install


    Regards,
    JPNinPA

    Sent using TapTalk
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

  4. #4

    Re: No Spark

    Quote Originally Posted by JPNinPA View Post
    There is a sensor called a crank sensor. If it dies it affects starting like you describe. You may not get any warning it's failing. If you replace it use oem manufactures and be sure the paper spacer gasket is on there when you install


    Regards,
    JPNinPA

    Sent using TapTalk
    Thanks JPNinPA - Iíll check that out.


    Sent from my iPhone using Jeepz.com mobile app

  5. #5

    Re: No Spark

    Quote Originally Posted by DrG View Post
    Thanks JPNinPA - Iíll check that out.


    Sent from my iPhone using Jeepz.com mobile app
    85 cj7 - no crank sensor.


    Sent from my iPhone using Jeepz.com mobile app

  6. #6
    Join Date
    Feb 2009
    Location
    Dayton Ohio Area
    Posts
    5,170

    Re: No Spark

    My bad? Sorry I looked up 1987 not 1985.


    Regards,
    JPNinPA

    Sent using TapTalk
    "Never look down on anybody unless you're helping him up" - Jesse Jackson

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