Vacuum advance/pick up module issues
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Vacuum advance/pick up module issues
I replaced the pick module inside the distributor and now the vacuum advance is maxing out too soon causing it to kill the truck once you give it gas. Has anybody else had this problem? Have tried adjusting the vacuum advance and still having the issue
Laughing Gas
Joined: Mar 2015
Posts: 885
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From: Pittsburgh
What engine do you have? What carb do you have? What does the other end of the vacuum line connect to?
If its the stock carb, I believe they all connect to one of the thermal vac switches. If its aftermarket, my understanding is that one or more of the aftermarket makers have a specific port on the carb that the vac advance should connect to.
If its the stock carb, I believe they all connect to one of the thermal vac switches. If its aftermarket, my understanding is that one or more of the aftermarket makers have a specific port on the carb that the vac advance should connect to.
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Elder User
Joined: Apr 2006
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From: mid-MO
Originally Posted by gfw1985
Just replacing the pickup module should have had no effect. Make sure one of the vacuum advance springs didn't break or come loose while you were in there.
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Cranky Old Guy
Joined: Mar 2008
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From: Raphine, Virginia
Think about manufacturing tolerances. The pick up is screwed into place, it has not dowel pins or other features to locate it accurately. Plus, the pick up is mounted on a formed sheet metal piece that is also screwed to the body of the dizzy IIRC. Overall, it probably won't affect timing, but if it were me I would double check it.
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1974 f-100 with a 360. Don't know what kind of ignition it is. It has the ignition control module on the fender well and an electronic distributor (does not have points). Got the truck running but it would die after it warmed up so replaced the icm and the pick up module in the distributor. After I replaced the pick up module the timing was messed up so we got the timing correct again. But now when the vacuum advance is hooked up the truck dies when you give it gas.
Tuned
Joined: Jan 2004
Posts: 325
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From: B.C.Canada, EH?
This^^^^. I had this exact problem...fixed wire...all is good now.
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