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Unread 11-17-2014, 03:17 PM   #1
pirate94
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1983 CJ7 
 
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CJ dies after about a min.

I have been fighting several problems with my "83 258. I have a new Carb, New fuel tank. Fuel lines have been blown out. New fuel filters. New sending unit. New fuel pump.

Choke is finally working. Takes a while to start, Idles fine, then dies after about a minute. Sounds like a fuel problem.

Any help would be great.

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Unread 11-17-2014, 03:31 PM   #2
pirate94
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Also, do I have to use the thee prong fuel filter for the tank vent lines, or can I cap the vent line?
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Unread 11-17-2014, 04:00 PM   #3
Matt1981CJ7
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Quote:
Originally Posted by pirate94 View Post
Also, do I have to use the thee prong fuel filter for the tank vent lines, or can I cap the vent line?
The third hole in the OEM style fuel filter is a fuel return line, not a vent. It regulates pressure to the carb, and is said to help prevent vapor lock. Why would you cap it?

The fuel tank vents thru a separate line that connects the tank to the vapor canister.

Your problem sounds like an improperly adjusted choke. What type of carb do you have?

Matt
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Unread 11-17-2014, 08:46 PM   #4
pirate94
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Carter BBD
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Unread 11-17-2014, 08:48 PM   #5
pirate94
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Even if I keep RPM's up. Engine will still die.
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Unread 11-17-2014, 08:49 PM   #6
pirate94
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What part of choke do you think is out of adjustment?
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Unread 11-17-2014, 10:14 PM   #7
dg6772
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Does your engine sputter out and die, or shut down like you turned it off. Sputter leads to fuel, quick shutdown leads more towards electrical. Coil, ignition circuit, etc. My friend chased fuel for a long time before realizing it was electrical. Just a thought....

Dave in Muskegon using JeepForum app
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Unread 11-17-2014, 10:49 PM   #8
pirate94
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sputters and dies.
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Unread 11-18-2014, 12:37 AM   #9
Matt1981CJ7
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You said the choke is "finally working". Describe how it functions.

Matt
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Unread 11-18-2014, 03:23 PM   #10
pirate94
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During a cold start butterfly is closed, with a small gap in the barrel. After running for a short time butterfly starts to open. Is this what you are looking for?
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Unread 11-18-2014, 06:26 PM   #11
davegt
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If it dies after a min for so and the choke is already opening up then that's your problem. Choke is opening too fast
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Unread 11-18-2014, 07:14 PM   #12
rickscj7boom
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hold the choke and see if it stays on..
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Unread 11-20-2014, 09:54 PM   #13
pirate94
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Holding choke open made no difference. After several start attempts engine idled well for about 15 min. Test drive was a huge failure. As soon as clutch was engaged engine died. Then wouldn't start. After next start same thing, died as soon as under load. WTF???!!!
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Unread 11-20-2014, 10:06 PM   #14
Jeepn-n-tx
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Could be vacuum leaks .... those damn things can throw a carb all kinds of out of whack.


Is everything stock or have you made lots of changes? Have to you rerouted vac lines and forgotten one? Picks would help us immensely.
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Unread 11-21-2014, 07:30 PM   #15
rickscj7boom
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vacuum leaks are hell.. I had one on my 84 and thought it was my carb until I came on this site and was straightened out by the guys. so you already checked to make sure the card is getting fuel? are you using the correct fuel filter with return line back to tank?
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