new idle problem
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Junior User
Joined: Aug 2003
Posts: 54
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From: Polson, Montana
new idle problem
I have a fresh 390 in my 72. I have never had any problems until lately. When I start it up cold, it runs great until it warms slightly, then the idle drops way down and will eventually stall. I checked to see if the choke is opening up and it is. I have the flamethrower ignition on it. After it gets fully warmed up, it runs great. I have the edelbrock performer on it. Any ideas? Vacuum leak? Carb problem? I also just put in a new alternator today as the lights would flicker at idle, but it's always done that. I haven't even fired it since I got the alternator on. Could low or pulsing voltage to ignition do it? I did run the hot wire on the ignition to my ignition switch after reading an article about getting a full 12 volts off the coil.. I did that some time ago. I did replace my valve cover breather a while ago to a sealed cap. I am going back to the breather if I can find one to fit my twist on type aluminum valve covers. Could this change have done anything? any help would be appreciated. Thanks
Last edited by deputy1515; Nov 2, 2005 at 06:51 AM.
