CJ7 Choke - JeepForum.com

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post #1 of 16 Old 01-05-2012, 07:07 AM Thread Starter
scstrick79
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CJ7 Choke

Got a question concerning an 85 CJ7 choke. I think that it is an electric choke as I dont have a manual control...
When it is cold, I need to pop the hood and and open the flap to the carb manually to crank the jeep. I have to this sometimes once the engine is warm to start as well! How can I diagnose this as its rather irritating to have to pop the hood to crank!?!?

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post #2 of 16 Old 01-05-2012, 07:33 AM
lucdog
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Electric choke.
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ForumRunner_20120105_083259.jpg  

1957 WILLYS pickup,
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1979 CJ7 360, TH400/Quadratrac.
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post #3 of 16 Old 01-05-2012, 07:45 AM
Outnumbered
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Choke butterfly should be closed to start a cold engine and open to start or run a warm engine. If it is closed when it shouldn't be, it will cause a rich condition making it hard to run or start the engine.

1985 CJ7, 258, TF999, D300, D30, AMC20, 4.5" lift, 33" BFG's
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post #4 of 16 Old 01-05-2012, 08:19 AM
MoC
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The picture below (not mine) is how the choke should be wired for your 258. If the po stripped the wiring out you can just run a switched hot to the choke and will be fine. If you do have a wire going to the choke the first thing I would check is to see if it has power to it.
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Electric Choke & Manifold Heater Wiring.gif  

Under A Sun Thats See It All Before...
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post #5 of 16 Old 01-05-2012, 08:39 AM Thread Starter
scstrick79
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ok... apparently it is not an electric choke as i dont have anything that looks like that. What i have looks almost like a thermostat with a "piston" running in the middle. this piston is connected to the carb and controls the flap. Even with the engine cold, the flap is all the way closed not allowing any air. Could the "thermostat" be my problem?
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post #6 of 16 Old 01-05-2012, 08:59 AM
John Strenk
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Sounds Like you are missing the black cap in the picture above


Is this what you see:

Yours will not have that pipe on it.




This is what is probably missing
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post #7 of 16 Old 01-05-2012, 09:05 AM Thread Starter
scstrick79
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yep, thats what it looks like... now, what do i do from there?
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post #8 of 16 Old 01-05-2012, 09:11 AM
John Strenk
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Need to get a cap and ring. The cap is the easy part. Everyone sells them.
Getting the ring that holds it on and makes the ground connection is the hard part to find.

Maybe someone has one laying around someplace



They seem to be pretty much a universal size.I used ones off a Motorcraft and made it work.
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post #9 of 16 Old 01-05-2012, 10:01 AM
Outnumbered
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I thought you could buy a replacement electric choke but I've never looked for one. Another option is to install a manual choke. Just a push/pull knob with a cable routed into the dash area. I like manual chokes, almost too simple to fail.

1985 CJ7, 258, TF999, D300, D30, AMC20, 4.5" lift, 33" BFG's
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post #10 of 16 Old 01-05-2012, 10:12 AM
Outnumbered
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post #11 of 16 Old 01-05-2012, 11:31 AM
Outnumbered
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Looks like this ring may work also...

http://www.ebay.com/itm/Ford-Motorcr...34859771095104

1985 CJ7, 258, TF999, D300, D30, AMC20, 4.5" lift, 33" BFG's
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post #12 of 16 Old 01-05-2012, 11:47 AM Thread Starter
scstrick79
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Actually, i have the ring and cap and it is plugged in... it looks correct... i was just looking at it wrong. Anyway, any ideas where I can go from here?
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post #13 of 16 Old 01-05-2012, 11:58 AM
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Quote:
Originally Posted by scstrick79 View Post
Actually, i have the ring and cap and it is plugged in... it looks correct... i was just looking at it wrong. Anyway, any ideas where I can go from here?

1985 CJ7, 258, TF999, D300, D30, AMC20, 4.5" lift, 33" BFG's
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post #14 of 16 Old 01-05-2012, 12:00 PM
Outnumbered
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I would try checking the wiring and compare to the diagram posted above.

Here is some testing info I found in a search...

http://www.jeepforum.com/forum/f8/el...-test-1054106/

1985 CJ7, 258, TF999, D300, D30, AMC20, 4.5" lift, 33" BFG's
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post #15 of 16 Old 01-05-2012, 12:01 PM Thread Starter
scstrick79
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Yeah, Outnumbered... felt pretty boneheaded about that one...
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