Greetings, I recently took my distributor to the guy that built my motor to have him re-curve it. He said the curve wasn't far off but the vacuum advance module was. I was surprised at how much nicer it started from a dead stop once reinstalled - very smooth with no hesitation - at least for a week or so.
My problem is that it seems to have changed. The motor starts up and idles once warm at about 680 as it should. (If you remember I have a bit of a cam) Then I drive it, when I come to a stop the idle stays around 1100, it won't drop back down to 680. I checked the manual choke and high idle screw on the Edelbrock carb and they are not the problem. Sometimes when I hit the brakes coming to a stop, it will drop back down to 680, but very rarely. I'm guessing that part has something to do with the power brakes pulling vacuum and letting whatever is in the distributor module go back down. I checked all my vacuum lines. The one to the brakes - the one from the dist to the carb, and the plug in my Edlebrock carb. They are all sealed. Those are the only vacuum lines I have. (I have an electric wiper motor)
If I pull the line from the distributor it drops back down to 680. If I plug the line with my finger it stays at 680. I can suck on the line to the dist vacuum module and it goes back up to 1100. Can anyone tell me what might be wrong or what is going on?
thx, Dave J
My problem is that it seems to have changed. The motor starts up and idles once warm at about 680 as it should. (If you remember I have a bit of a cam) Then I drive it, when I come to a stop the idle stays around 1100, it won't drop back down to 680. I checked the manual choke and high idle screw on the Edelbrock carb and they are not the problem. Sometimes when I hit the brakes coming to a stop, it will drop back down to 680, but very rarely. I'm guessing that part has something to do with the power brakes pulling vacuum and letting whatever is in the distributor module go back down. I checked all my vacuum lines. The one to the brakes - the one from the dist to the carb, and the plug in my Edlebrock carb. They are all sealed. Those are the only vacuum lines I have. (I have an electric wiper motor)
If I pull the line from the distributor it drops back down to 680. If I plug the line with my finger it stays at 680. I can suck on the line to the dist vacuum module and it goes back up to 1100. Can anyone tell me what might be wrong or what is going on?
thx, Dave J
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