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Unread 09-17-2011, 12:39 PM   #1
crockett07
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1992 XJ Cherokee 
 
Join Date: Jan 2011
Location: Lake wales, Florida
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carter carb

put my rebuilt motor back in, finally identified my carb. it is a carter carburetor. i have all the vacums blocked off but its just running terrible. i know about the nutter bypass but i havnt done it yet. do i need to? dont want to start cutting wired is i dont need to

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Unread 09-17-2011, 12:44 PM   #2
Thumper01
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1987 YJ Wrangler 
 
Join Date: Feb 2011
Location: Peachtree City, Georgia
Posts: 134
my carb was a mess. Vacume lines missing, nutter bypass was done. Today I changed my carb to a motorcraft 2100/2150. I love it!! It idles smooth with great throttle response.
jeep-upgrade-060.jpg  
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Unread 09-17-2011, 12:59 PM   #3
dancytron
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1990 YJ Wrangler 
 
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Location: st. louis
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You either have to get all the sensors working and everything hooked back up like stock so the computer can control it like it is meant to or you have to do the Nutter.

http://home.sprynet.com/~dale02/list.htm

When you say you have "all the vacuums blocked off", what do you mean? Even with the Nutter, it needs some of the vacuum stuff (PCV, distributor advance etc) to run right.
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Unread 09-17-2011, 01:04 PM   #4
crockett07
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everything is blocked. i started off with not alot to work with so idk where the distributor advance or the the pcv goes
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Unread 09-17-2011, 01:14 PM   #5
dancytron
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Sounds like you have to do the Nutter. There isn't anyway you'll get it running right with the computer.

Then you have to figure out what vacuum needs to be hooked back up to make it run right. Look at this thread.

http://www.jeepforum.com/forum/f12/n...-mess-1250627/

Not to mention the 4wd CAD on the front axle and the heater which need to be hooked to vacuum too.
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Unread 09-17-2011, 01:26 PM   #6
sec2776
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1988 YJ Wrangler 
 
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If you can afford it buy a motorcraft 2100 like in a previous post. I had the Carter and like my ex-wife threw it away and got something a lot better. You don't need as many vacuum lines a or wiring. It runs great. If you really want Haynes manual has a great diagram where all the lines go.
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Unread 09-17-2011, 01:35 PM   #7
dancytron
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Quote:
Originally Posted by sec2776 View Post
If you can afford it buy a motorcraft 2100 like in a previous post. I had the Carter and like my ex-wife threw it away and got something a lot better. You don't need as many vacuum lines a or wiring. It runs great. If you really want Haynes manual has a great diagram where all the lines go.
Once you do the Nutter, you need the same amount of vacuum lines no matter what carburetor is on there.

IMHO, it is better to get it running as good as you can without replacing big expensive pieces and then when/if you do get a new carb, it will run right. If you put a new carb on it now, you will still have to nutter it and reconstruct the vacuum stuff and also tune in a new carb all at the same time.

Your carb might be fine or it might be totally shot and unusable. You won't know that until you get it hooked up right.
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Unread 09-17-2011, 01:50 PM   #8
crockett07
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alright well i did the nutter and now the thing wont crank at all. tried advancing the distributor 8 degrees but now i have nothing...
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Unread 09-17-2011, 02:49 PM   #9
dancytron
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1990 YJ Wrangler 
 
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No spark or no fuel?

How did you put the wires together. Go through the steps and make sure you did it right.

http://www.jeepforum.com/forum/f8/ho...bypass-522262/
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Unread 09-17-2011, 03:29 PM   #10
Old4X
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1990 CJ7 
 
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The Nutter only involves 2 wires, double check it and try again. Make sure you didn't disconnect the ground wire coming from the distributor, this is your only ground for the entire ignition system.

As for the Carter BBD, if it won't run with the Carter, there is something else wrong with your setup. It is a good carb, they have powered American built trucks for Billions of miles. Detroit wouldn't have used them for more than 40 years if they were as bad as folks here say they are.
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418 miles on 19 gallons of gas. Can't beat the BBD !
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Unread 09-17-2011, 03:41 PM   #11
crockett07
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i straightened out the nutter. everything is good with that. guess ill have to just start working on the vaccum
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