1. Registration trouble? Please use the "Contact Us" link at the bottom right corner of the page and your issue will be resolved.
    Dismiss Notice

Static timing, using nothing but a 12v test light

Discussion in 'Early CJ5 and CJ6 Tech' started by Chuck, Oct 3, 2011.

  1. Oct 3, 2011
    Chuck

    Chuck Sponsor

    Southshore Ma
    Joined:
    Sep 19, 2004
    Messages:
    1,463
    Some will find this useful (points distributors) others interesting but not useful (electronic distributors).

    The first step is to move your crankshaft to factory specs, (5 degrees BTDC for a 225 V6). I highlight the timing marks with a whiteout marker. Most move the crank using a socket and ratchet on the crank nut but I find it easiest to put the tranny in the highest gear and rock the Jeep while I watch the timing marks. It doesn’t take any effort to move the Jeep and there is no need to crawl under it as well. If you go beyond the timing mark make sure you go all the way back and come at it again to account for the slack in the timing chain.

    [​IMG]

    Next loosen the lockdown bolt so the distributor moves freely. Remove the cap and the low tension lead from the distributor. Attach a 12v test light tip to the end of the low tension lead and the other end to something hot.

    It’s hard to see in the daylight but with the crank in the correct position the test light is on.

    [​IMG]

    Hold the rotor clockwise and rotate the distributor clockwise “just” until the light goes out. That’s it, tighten down the lockdown bolt and your done. Doesn’t get any easier then that.

    Hope this helps.
     
  2. Oct 3, 2011
    timgr

    timgr We stand on the shoulders of giants. 2022 Sponsor

    Medford Mass USA
    Joined:
    Aug 10, 2003
    Messages:
    23,596
  3. Oct 3, 2011
    unclebill

    unclebill Banned

    a sun blasted...
    Joined:
    Feb 17, 2009
    Messages:
    2,358
    thanks!
     
  4. Oct 3, 2011
    Chuck

    Chuck Sponsor

    Southshore Ma
    Joined:
    Sep 19, 2004
    Messages:
    1,463
    Your welcome.

    Also, I'd like to thank Chuck (Warloch) for hand delivering to me the vacuum advance canister which I mounted on the distributor. Works great!
     
  5. Oct 3, 2011
    chuck123wapati

    chuck123wapati Member

    wyoming
    Joined:
    Jun 18, 2008
    Messages:
    761
    very cool indeed!!
     
  6. Oct 3, 2011
    jeepdaddy2000

    jeepdaddy2000 Active Member

    Eagle Point oregon
    Joined:
    Jun 24, 2004
    Messages:
    1,165
    Actually, you don't even need the test light.
    You can simply turn the key to the on position.
    Pull the coil wire and hold it about 1/4 inch from the block.
    Keep the distributor connected and rotate it.
    When the coil wire sparks, lock the distributor down.
    Recheck to insure your #1 plug wire is under the rotor and your off.
     
  7. Sep 4, 2013
    68BuickV6

    68BuickV6 Well-Known Member

    Hesperia, CA.
    Joined:
    Mar 12, 2012
    Messages:
    2,161
    When you rotate the distributor, the light should go off?

    I have the test light hooked to the battery, and the other end is through the negative wire, unhooked from the coil. When I rotate the distributor and hold the rotor, the test light doesn't even seem to flicker.

    Thoughts?
     
  8. Sep 5, 2013
    djbutler

    djbutler Sponsor

    Rio Linda CA
    Joined:
    Nov 5, 2007
    Messages:
    727
    With the points closed, the light should be lit. When the points open, the light should go out.
    If your light never does turn on with the points closed, you may need a new set of points.

    Don
     
  9. Sep 5, 2013
    Danefraz

    Danefraz Well-Known Member 2023 Sponsor 2022 Sponsor

    Chico CA
    Joined:
    Aug 11, 2012
    Messages:
    2,275
    thinking about prior experience here, don't stand on a wet slab, with wet hands, highly suggest plastic plug pliers rs made for holding hot wires... I'm sure degraded wires don't play in either...

    yeouch
     
  10. Sep 5, 2013
    uncamonkey

    uncamonkey Member

    Greeley CO
    Joined:
    Jun 2, 2009
    Messages:
    2,104
    With the points closed, the light should be lit. When the points open, the light should go out.
    If your light never does turn on with the points closed, you may need a new set of points.

    Don
    I'm not sure this is correct, if the points are closed, the circuit is grounded, so no power to the light.
    It depends on where you hook the other end of the test light to.
     
  11. Sep 5, 2013
    68BuickV6

    68BuickV6 Well-Known Member

    Hesperia, CA.
    Joined:
    Mar 12, 2012
    Messages:
    2,161
    Figured it out, mostly, and cooked my test light.
     
  12. Sep 5, 2013
    1960willyscj5

    1960willyscj5 Well-Known Member

    Mesa, Arizona
    Joined:
    Nov 27, 2006
    Messages:
    2,793
    A buzzer works real good for this. Then you are not trying to look in two different places at once to do your timing.
     
  13. Sep 6, 2013
    djbutler

    djbutler Sponsor

    Rio Linda CA
    Joined:
    Nov 5, 2007
    Messages:
    727
    [/QUOTE]Don
    I'm not sure this is correct, if the points are closed, the circuit is grounded, so no power to the light.
    It depends on where you hook the other end of the test light to.[/QUOTE]

    Generally folks will connect one side of the test light to the battery, thus the other lead gets connected to the wire from points to coil. When the points are closed the points provide the path to ground and the light is on.

    Don
     
  14. Sep 8, 2013
    uncamonkey

    uncamonkey Member

    Greeley CO
    Joined:
    Jun 2, 2009
    Messages:
    2,104
    Don
    I'm not sure this is correct, if the points are closed, the circuit is grounded, so no power to the light.
    It depends on where you hook the other end of the test light to.[/QUOTE]

    Generally folks will connect one side of the test light to the battery, thus the other lead gets connected to the wire from points to coil. When the points are closed the points provide the path to ground and the light is on.

    Don[/QUOTE]

    I normally clip the wire end to a ground, I'm usually testing for power to lights and things like that.

    Anyway, when the points are closed the light will turn on or go out however you wire it up, you're still looking for the place where the points make contact.
     
New Posts