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Unread 01-17-2010, 07:52 PM   #1
bprimrose
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1978 CJ5 
 
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Carter YF did not have discharge ball or weight

I just rebuilt a Carter YF from a 1978 CJ5 258. There was no discharge ball or weight. So...I just put it back together. Now the motor stalls chokes and runs rough until it warms up. But it didn't do that before the rebuild. SHould I pull the Carb and find a weight and Ball?
Thanks

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Unread 01-18-2010, 02:13 AM   #2
John Strenk
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Did you get a rebuild kit? They usually have them included.

But that may not be the problem. There may be other problems with re-adjusting the carb or in rebuilding.
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Unread 01-18-2010, 04:21 AM   #3
bprimrose
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ball and weight

John,
Thanks for the reply.
There was a ball but no weight in the rebuild kit.
I used the Jeep service manual for adjustments. What adjustment could I need to make. I really am an amateur.
The Jeep starts great, Idles high, but runs well. THen when you give it gas it bucks and sputters and stalls without feathering the gas. If you try to drive it it does the same thing. However, after warmup it runs great smooth?
Thanks
Brian
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Unread 01-18-2010, 04:42 AM   #4
John Strenk
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What type of choke do you have on it. Automatic or manual. Are you sure the choke closes properly?

Also When adjusting the metering needle, did you push down on the pump as shown before adjusting the screw? I've made this mistake before.
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Unread 01-18-2010, 04:47 AM   #5
bprimrose
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Automatic, heat activated. MAybe a dumb question but, Any special way to adjust choke closing other than to look?
I did push down on the pump before adjusting the screw. This was a first for me. So I could have done anything!!
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Unread 01-18-2010, 05:12 AM   #6
John Strenk
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Well there is a procedure but for me, when the engine is cold I just adjust the cover until the choke valve is fully shut.

Here is the procedure.
mchasamc_1973_4-2-7_jpg.jpg   mchasamc_1973_4-2-8_jpg.jpg  
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Unread 01-18-2010, 10:03 AM   #7
bprimrose
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carb problem continues

Well, it just goes on.
Again, this is from a complete newbie.
Per your advise, I checked the choke valve when cold and it was closed all the way. However on starting it opens 1/2 to 3/4s.
Spits and sputters when I try to give it gas or accelerate. When warm, it runs fine.

I appreciate any feedback on this issue!!
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Unread 01-18-2010, 10:45 AM   #8
John Strenk
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Well a simple test would be to rotate the choke cover a couple of degrees richer. This delays the opening of the choke a little longer. The choke should open a little when the engine starts. There is a piston in the choke housing that when vacuum is applied as when the engine starts will pull the choke open so you don't kill and flood the engine.

Also don't overlook how well your ignition is working either. A good strong spark will help fire off a cold mixture.

Looks like the choke should only open around 1/4" at startup.
mchasamc_1973_4-2-9_jpg.jpg  
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