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Unread 04-10-2010, 08:13 PM   #1
UserX
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Join Date: Feb 2010
Location: michigan
Posts: 34
Nutter then issues.

So I did the nutter today. Adjusted the timing. To 8*. Jeep starts an runs fine. Now...it 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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Unread 04-10-2010, 08:19 PM   #2
Burnerman
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1989 YJ Wrangler 
 
Join Date: Oct 2006
Location: Vernon, NJ
Posts: 4,757
Is the vacuum advance connected to ported vacuum and did you time it at normal curb idle?
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Unread 04-11-2010, 07:52 AM   #3
UserX
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Join Date: Feb 2010
Location: michigan
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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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Unread 04-11-2010, 08:08 AM   #4
4LarXedo4
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1990 YJ Wrangler 
 
Join Date: Sep 2009
Location: Kingston, New York
Posts: 269
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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Unread 04-11-2010, 11:52 AM   #5
UserX
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Join Date: Feb 2010
Location: michigan
Posts: 34
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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