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post #1 of (permalink) Old 01-24-2001, 10:01 PM
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Carb coughs

I just bought my first Zuk this Nov. and took it on the road for the first time today. I soon discovered I have a lot more to learn. (You would think 2 hours a day "studying" would be enough) Top speed was 45 and the carb would cough and sputter when I floored it no matter what gear. It would build up the RPM's and speed and then would start coughing. It would be fine as long as I backed off a bit. It also starts hard some times (Choke?). I have a new starter, good battery and a new 130 amp alt. I am looking for any advice you kind people are willing to give, Thanks

87 Zuk Stock in need of some Luvin
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post #2 of (permalink) Old 01-25-2001, 12:14 AM
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Re: Carb coughs

Get in touch with DannyL for a pony.

Drive it like you stole it!!!
post #3 of (permalink) Old 01-25-2001, 12:14 AM
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Re: Carb coughs

First off, A 130 AMP ALT!! JEEZ...for a stocker thats preety sweet. Have you taken off the top of the air bracket and sprayed carb cleaner down there while its running? Have you looked at the plugs to see if its running rich? Start there and get back to us, people will help for sure from there. Tell us what your plugs look like, and look at your carbs throttle body.

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post #4 of (permalink) Old 01-25-2001, 04:33 AM
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Re: Carb coughs

the problem with stock carbs is they are so complicated
to work on due to all the ecm hookups. very few adjustments
are possible due to computer does the ajustments not you. i
like sammi's but i run a weber carb-its easy to work on & its an active carb you can adjust not the ecm. get a pony
or weber or other carb if you fight yours much. lots of
times its the ecm acting up not the carb. oldzuki

88 spoa samurai/weber/
97 sidekick sport
those that can samurai those that can't ?
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post #5 of (permalink) Old 01-25-2001, 05:14 AM
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Re: Carb coughs

Pull the air intake off the airbox, (Before the airfilter so it stays on.) and see if that helps.
Drive it again. I was chashing down a problem like that for a long time, turns out the intake was restrictive.
(At least on my engine.) sounds like your secondary isn't opening (the barrel on the drivers side of the carb.)
that and clan it good with spray carb cleaner, You can evan go so far as take the float bowl drains out and
spray some in there to clean that.

Glenn Loud
87' Zuke Spoa, 31's, 4.16 tcase, Camo,Header,2"exhuast, Cam.
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post #6 of (permalink) Old 01-25-2001, 11:17 AM
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Re: Carb coughs

Thanks for the reply this forum seems to be a valuable asset.
I had to replace the alt so I went big for future mods.

I pulled the plugs and the look like new with a hint of coco brown color, that seems ok. I hve put carb cleaner down the carb but will try some more because I think it may help. I have even tried some stuff they call Deep Creep that supposed to clean it up.
I have also noticed the sensor light comes on and off. The carb also will pop at times whick makes me think rich.
Any advice appreciated.

87 Zuk Stock in need of some Luvin
post #7 of (permalink) Old 01-25-2001, 07:36 PM
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Re: Carb coughs

if the sensor light is comeing on then the O2 sensor in the exhaust manifold is bad and the carb is swithched run rich only and the ecm wont adjust it leaner

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