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BigRandy · 09-15-2017, 08:47 PM

There's a possibility I may have found a problem - maybe THE problem.

When I reinstalled the carb I connected all lines exactly the way they were when I got the truck 3 months ago. Looking at it yesterday I noticed the line to the vac advance didn't look right. When looking at the carb from the front of the truck it was connected to a port on the left which has vacuum anytime the engine is running. I moved it to the port on the right and it idles well and the exhaust doesn't stink as bad. Since I have a mild curve in the distributor my guess is it went way advanced when I reconnected the vacuum line. I haven't put any miles on it to see if the MPG improved but it runs fine and just might be running a little leaner. I also no longer have the idle problem where one time it's fine one day and the next it's 400 RPM too high.

Is my hunch in the ballpark?

09-15-2017, 08:47 PM	#14
BigRandy Registered User Join Date: Jun 2017 Location: San Antonio, Texas Posts: 156	Re: I could use some Quadrajet Guru help There's a possibility I may have found a problem - maybe THE problem. When I reinstalled the carb I connected all lines exactly the way they were when I got the truck 3 months ago. Looking at it yesterday I noticed the line to the vac advance didn't look right. When looking at the carb from the front of the truck it was connected to a port on the left which has vacuum anytime the engine is running. I moved it to the port on the right and it idles well and the exhaust doesn't stink as bad. Since I have a mild curve in the distributor my guess is it went way advanced when I reconnected the vacuum line. I haven't put any miles on it to see if the MPG improved but it runs fine and just might be running a little leaner. I also no longer have the idle problem where one time it's fine one day and the next it's 400 RPM too high. Is my hunch in the ballpark?