Idle problems.... - JeepForum.com

 
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post #1 of 7 Old 04-01-2013, 10:24 PM Thread Starter
Bigphil
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1990 YJ Wrangler 
 
Join Date: Apr 2013
Location: Grayson
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Idle problems....

Hello, I am a owner of a 90 jeep wrangle....it has the 4.2 straight 6 cylinder...I am having issues with at idle.....I have replaced plugs, wires. Dist. Cap rotary button. And installed a new webber carb....I have checked compression all cylinders have 100 to 110..so Itake it no burnt valves....any help would be greatly appreciated.....new to the jeep scene but you guys rock..thanks

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post #2 of 7 Old 04-02-2013, 07:42 AM
Chris
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1990 YJ Wrangler 
 
Join Date: Jul 2008
Location: Wildomar/ Big Bear
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Have you messed with the timing?
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post #3 of 7 Old 04-02-2013, 09:05 AM
hdfxrs91
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Check for vacuum leaks?
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post #4 of 7 Old 04-02-2013, 11:19 AM
JCashen
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1990 YJ Wrangler 
 
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Location: Fort Worth
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Was the nutter bypass done previously? If not when you changed to a weber your computer still controls timing. Look up nutter bypass and make sure your timing is no longer controlled by the computer.

"Drippy"

90 YJ 5.2 Magnum, 4.10 LSD 8.8
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post #5 of 7 Old 04-02-2013, 01:36 PM
Old4X
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1990 CJ7 
 
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Take the computer completely out and leave it out, useless once you changed the carb.

418 miles on 19 gallons of gas. Can't beat the BBD !
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post #6 of 7 Old 04-02-2013, 08:34 PM Thread Starter
Bigphil
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1990 YJ Wrangler 
 
Join Date: Apr 2013
Location: Grayson
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Haven't messed with the timing......did think it had a computer, why would it....thanks fellas
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post #7 of 7 Old 04-02-2013, 09:14 PM
Old4X
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1990 CJ7 
 
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Computer is behind and under the glove box

418 miles on 19 gallons of gas. Can't beat the BBD !
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