Calgary Jeep Association

Author Topic: Carb for CJ7  (Read 1694 times)

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chuckroast

  • Guest
Carb for CJ7
« on: October 13, 2005, 07:49:14 PM »
I have a 1984 CJ & with the 4.2l six. The stock carb has the electric feedback and does not work (choke). Does anybody know about swapping to the older style carb with no feedback?

yjpaul

  • Guest
Carb for CJ7
« Reply #1 on: October 14, 2005, 10:40:03 AM »
yep, ive done it.  Its very easy, and not too pricey depending on where you get the used carb.  Jeep stuff rips you off (as usual) with a price of $100 on varying qualities of used carbs.  Too bad there are never yj's at pickurpart.  but anyways, a couple of people have them laying around, just do some lookin, or if you want it right away, unfortunatly pickurpart or ebay are your sources to use.  The install is easy, i could even do it for you if you have a problem with it (no charge), and show you how to adjust your mixture.  Having no electronic mixture control (with the stepper motor that tends to fail on most cjs and yjs in the 15+ year range) is quite a relief because it takes one more thing away from the computer that can get wanky.  Also another upgrade that takes no more than 10 minutes and about 6 feet of 16 or 18 gauge wire is to directly connect the purple and orange wires from your ignition module (under your washer fluid and engine coolant resevoir) directly to your distributor cap.  This also strays more input from the computer, improves idle in some cases, makes it more simple, and is less to worry about.  And with the carb swap, your light may come on saying "emiss maint" due to your O2 sensor and computer having no control over your mixture.  Just rip the bulb out.

chuckroast

  • Guest
carb
« Reply #2 on: October 14, 2005, 07:33:38 PM »
thanks for the information. When i find a carb i will let you know because i have never set up a carb before.

yjpaul

  • Guest
Carb for CJ7
« Reply #3 on: October 15, 2005, 12:05:27 PM »
no problem pal.  Just pm me when the need arises.

Wif

  • Guest
Re: Carb for CJ7
« Reply #4 on: October 17, 2005, 02:10:34 PM »
Quote from: "chuckroast"
I have a 1984 CJ & with the 4.2l six. The stock carb has the electric feedback and does not work (choke). Does anybody know about swapping to the older style carb with no feedback?


Have you taken this apart ?? do you have a 12v supply going to the choke with the ign switched on ??
Take a look at some Ford carbs (maybe others) .. if it's only the bi-metal strip thats gone the outer part is easy to swap out. It's set so that the flap closes over when the engine is cold and the throttle is depressed once. Once the engine's been on for a short while it opens right up.

chuckroast

  • Guest
carbs
« Reply #5 on: October 18, 2005, 09:05:04 PM »
I thought i would replace the carb with a rebuilt unit, partly because it is 21 years old and partly because i figured it would be less time in the long run to do it all at ounce. I called Modern motors and they said they would replace the carb with a no feedback one, but they had to change the wiring harness, which came to $600 for everything.