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Carburetor question

Discussion in 'Wrangler YJ (1986-1995)' started by grunder, Aug 6, 2019.

  1. Aug 6, 2019 at 11:01 AM

    grunder [OP] New Member

    Aug 6, 2019
    1987 WranglerYJ
    My mechanic told me to get a rebuilt carburetor for 87 yj. Got one on ebay and he installed it says it ran good but new carb did not have place to put stepper motor from old carb. Said it probably didnt need it...
    Jeep seems to lack power although it doesent stall repeatedly like before...can this be an adjustment to the mixture/idle?
    What to do?
    Thenks, new guy Grunder
  2. Aug 6, 2019 at 5:17 PM
    Jim Beam

    Jim Beam Well-Known Member

    Feb 11, 2019
    First Name:
    1986 CJ7
    Fuel Injection, Dana 44s, T18, 4.10s w/lockers
    So, I take that you did not replace it with the oem style Rochester BBD carb. Well, it does not need it, so you are good there. Just what carb is on it now? Well, since you have removed the major item that the computer controls, your computer is now having issues with no feedback from the carb and your distributor is having issues with that. At least that is the way I see it. Hopefully, you do not live where there is emissions testing, 'cause then you are screwed, so to speak. Anyway, your computer and its sensors is no longer needed. There is a way to remove your computer from the improper computer controls it is probably receiving. This would be Called the John Nutter Bypass:http://www.4x4wire.com/jeep/tech/electrical/jn-ignition99/. There are other versions of this by the same name. More help can come with what is called the Team Rush Upgrade:https://www.jeepforum.com/forum/f8/i-6-teamrush-upgrade-definitive-669495/. This would installing a slightly larger distributor cap with a small adapter, rotor, and ignition wires. This helps stop the excessive spark arcing that goes on inside the distributor cap.
    JKBob 25 and aggrex like this.
  3. Aug 6, 2019 at 7:35 PM
    JKBob 25

    JKBob 25 Well-Known Member

    Mar 22, 2017
    First Name:
    Jersey Shore, NJ
    2016 JK Wrangler Sport
    2" Superlift kit. 315/ 70/17.
    Welcome to the forum @grunder . Seems like your in good hands here with @Jim Beam .
    Carbs can be fickle. Bad float. Incorrect fuel level. Bad jets and settings. I have a friend that switched to fuel injection on her 90 YJ. Might be an option for ya down the road. I'm subbed......
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