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Driving Me Crazy!!!!!!

Discussion in 'Early CJ5 and CJ6 Tech' started by txtoller, Apr 27, 2016.

  1. Apr 27, 2016
    txtoller

    txtoller Member 2023 Sponsor 2022 Sponsor

    Weatherford, TX
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    This is what is done....

    HEI installed, carb rebuilt by Guaranteed Carbs.

    Issue's:

    Start up runs smooth as silk, timing set at 8 BTDC, RPM at 800
    Hook up the vacuum advance...timing jumps off the chart
    It will run for about a minute or two, then just die.

    When I say die, not like it is starved for fuel, but like when you kill the power.

    My thoughts, (pure shade tree) is that my Alternator is not charging enough to keep the proper energy to the HEI. So we took it and had it tested, tested good.

    Any suggestions would be great.
     
  2. Apr 27, 2016
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    cordele, Ga.
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    Are you using ported vacuum from the carb? That is what you should be plugged into.
     
  3. Apr 27, 2016
    OrangeCJ5

    OrangeCJ5 Sponsor

    Taylorsville, UT
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    Can you keep it running with the throttle and or choke after you hook up the vacuum advance? There is nothing electrical involved with connecting up the vacuum advance so it's got to be a timing, air/fuel issue.
     
  4. Apr 27, 2016
    Walt Couch

    Walt Couch sidehill Cordele, Ga. 2024 Sponsor 2023 Sponsor 2022 Sponsor

    cordele, Ga.
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    Not really.. The HEI vacuum advance is what moves the pick-up coil which is connected to the module by two wires. A break in either of these two wires when moved to the proper position could break the ignition and shut down the engine.
     
    OrangeCJ5 likes this.
  5. Apr 27, 2016
    txtoller

    txtoller Member 2023 Sponsor 2022 Sponsor

    Weatherford, TX
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    May 28, 2014
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    Vacuum is to the carb.

    Whether I have the vacuum advance is on or not it just quits.

    Going to try and check TDC again and see where that takes me.

    Did get the new headlights today! So there is a positive.
     
  6. Apr 27, 2016
    txtoller

    txtoller Member 2023 Sponsor 2022 Sponsor

    Weatherford, TX
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    I'll check the wires for a break.
     
  7. Apr 27, 2016
    Focker

    Focker That's a terrible idea...What time? Staff Member

    WA
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    Aug 18, 2014
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    I spent hours (12) trying to figure out a similar issue and found a break in one of the wires inside the rubber grommet to the HEI housing. Use a voltmeter to check continuity from end to end while wiggling the wires to simulate engine vibration.
     
  8. Apr 27, 2016
    txtoller

    txtoller Member 2023 Sponsor 2022 Sponsor

    Weatherford, TX
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    Ok focker,

    What is your poison of choice? It was a loose ground inside. The screw that was holding the ground was loose. Screwed it down tight and tried again....purrrrrfect. Except now it appear my alternator is not charging. May have something wrong on the one wire. It was on there when I got it so will have to figure it out.
     
  9. Apr 27, 2016
    Focker

    Focker That's a terrible idea...What time? Staff Member

    WA
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    The ground under the cap that holds down the condenser? If so...To ensure that your ground stays connected...Drill a small hole through the threads of the ground screw hole, out through the bottom of the distributor. Put a long machine screw through the new hole and lock it in with a nut from underneath the distributor, then connect a ground wire (with eyelets on the both ends) to the new screw with another nut. Obviously the other end connects to a known good ground on the Jeep.

    Make sense?
     
  10. Apr 27, 2016
    txtoller

    txtoller Member 2023 Sponsor 2022 Sponsor

    Weatherford, TX
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    It does.

    Actually, all four were loose.
     
  11. Apr 27, 2016
    txtoller

    txtoller Member 2023 Sponsor 2022 Sponsor

    Weatherford, TX
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    Well, now I have no spark at all.

    I pulled the cover of the coil, and the ground wire is not grounded.


    Was going to set the timing and it quite...now no spark.

    Coil go kaput?

    Have power to the coil when key is on. Moved the ground wire to a screw that was showing a ground with tester.
     
  12. Apr 27, 2016
    Focker

    Focker That's a terrible idea...What time? Staff Member

    WA
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    Maybe. :mad:

    I bought a replacement for mine before I found the bad wire, this made me think I had a bad coil right out of the box. I didn't buy a high end one...I spent something like...$30? Now I have a backup. :)
     
  13. Apr 27, 2016
    txtoller

    txtoller Member 2023 Sponsor 2022 Sponsor

    Weatherford, TX
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    Awesome, now the clip broke....about to become a pile of smoldering embers.
     
  14. Apr 27, 2016
    eti engineer

    eti engineer Member

    Great Central...
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    Where's Taylorsville? I was born and raised in Logan.
     
  15. Apr 27, 2016
    47v6

    47v6 junk wrecker! 2023 Sponsor 2022 Sponsor

    USA
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    Got rid of the resistor? 12 volts to coil? Check with ohm meter from dist body to a good ground. Make sure continuity. Make sure +12 volt on coil pigtail is connected right. Make sure -12 volt in cap body is connected right.

    Check all grounds. Do basics and be sure of them before coil/module etc.
     
  16. Apr 27, 2016
    OrangeCJ5

    OrangeCJ5 Sponsor

    Taylorsville, UT
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    It's about 90 minutes from Logan. A suburb of Salt Lake.
     
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  17. Apr 27, 2016
    txtoller

    txtoller Member 2023 Sponsor 2022 Sponsor

    Weatherford, TX
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    Nope resistor, 12 volts to coil.
     
  18. Apr 27, 2016
    txtoller

    txtoller Member 2023 Sponsor 2022 Sponsor

    Weatherford, TX
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    Well...................

    Put the new coil in still no spark. Top it off on of the screws that holds the coil in, striped out, of course the one with the secondary ground. Now I have to buy a new cap. And I guess a new module............

    Anyone want a jeep mostly done?
     
  19. Apr 27, 2016
    Posimoto

    Posimoto Hopeless JEEP Addict

    Minden, Nevada
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    Hang in there txtoller. This too shall pass.
     
  20. Apr 27, 2016
    1960willyscj5

    1960willyscj5 Well-Known Member

    Mesa, Arizona
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    I'm already crazy. I'll take it!
     
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