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Old 08-25-2010, 03:12 PM   #1
Join Date: Jul 2010
Posts: 22
90 yj idles bad

I have a 90 jeep yj 4.2lt running a stock carter carb. I have done a nutter bypass. It is an automatic. My jeep idles rough and when I am driving it seems to do fine, maybe a little rough. But when I come to a stop the idle drops so low that the engine dies. When parked if you give it gas the idle drops low but not quite enough to kill the engine. I have my timing set to 8 degrees btdc. Any ideas on what it could be? Plz help!!! I know I should ditch the Carter carb an go with a webber but that's not in my budget yet.

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Old 08-25-2010, 03:42 PM   #2
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Location: winnie tx
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did you set the stepper motor needles all the way in to the carb?,,the idle tubes could be clogged too.

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Old 08-25-2010, 04:48 PM   #3
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I think I set the stepper motor all the way in. Is there a way to tell? I look into my carb and it looks like it may be back a little. How else do I set it without taking the stepper motor out? And as for my idle tubs, i should be able to just use a pipe cleaner correct?
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Old 08-25-2010, 11:17 PM   #4
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i ordered a weber 36DGED carb, i'll let you know if it helps, i have the same idle problem on my 88 yj 4.2
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Old 08-26-2010, 01:20 AM   #5
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