Nutter then issues. -
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post #1 of 5 Old 04-10-2010, 08:13 PM Thread Starter
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Nutter then issues.

So I did the nutter today. Adjusted the timing. To 8*. Jeep starts an runs fine. wasnt doing this before. When accelerating from a cruise at wot. It bogs and then backfires like crazy. Now, when I brought the timing to 8 after the bypass, it was wayyyyyy advanced. What would cause this? Jeep members what say you?

*edit - I have a empi 32/36 degree carb an intake. 4.2l

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post #2 of 5 Old 04-10-2010, 08:19 PM
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1996 ZJ 
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Is the vacuum advance connected to ported vacuum and did you time it at normal curb idle?

96 ZJ.
05' Grand Cherokee Limited, 2"OME lift
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post #3 of 5 Old 04-11-2010, 07:52 AM Thread Starter
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i looked and no. But the ported vaccum fitting on the carb has no hole. Can I change them? Does tht little bugger just unscrew?
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post #4 of 5 Old 04-11-2010, 08:08 AM
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i'm not familiar with the weber, but one of my vac hoses for the vacuum advance fell off and did exactly what yours is doing. you need to find a way to hook up your distributor to a ported line before you go driving again. If you have EGR still you could tap into that as that should be a ported vac line
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post #5 of 5 Old 04-11-2010, 11:52 AM Thread Starter
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Update: Pulled the carb and unscrewed the cap off the port next to the Vacuum Advance. Re-assembled the carb and started. Checked the port for vacuum. There is vacuum there. So I just picked up some vacuum hose and am heading back to the house to see if that was the issue all though I am sure thats what it is.
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