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Old 05-19-2010, 08:10 PM
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Idle Issues

I put some headers on my 73' 350 today. Now it wont idle. It cranks, idles crappy, then dies. If I give it some gas I revs upand will stay at higher rpm's fine. As soon as i take my foot off of it, it idles down then dies. Edelbrock carb and hei also on here if that helps.

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Old 05-19-2010, 09:21 PM
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Maybe the gasket at the base of the carb sucking some air .. They can start leaking at the strangest times . How long has the carb been installed 3 - 4 years, can be the life of the gasket . Check any hoses for a vacuum leak . Just a couple of ideas that come to mind .
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Old 05-19-2010, 10:38 PM
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Quote:
Originally Posted by trustyrustymudder
I put some headers on my 73' 350 today. Now it wont idle. It cranks, idles crappy, then dies. If I give it some gas I revs upand will stay at higher rpm's fine. As soon as i take my foot off of it, it idles down then dies. Edelbrock carb and hei also on here if that helps.
First, double check the routing of the wires- 1-8-4-3-6-5-7-2, and be sure the wires are all the way on. Recheck for a vacuum leak or line left off.

Then (if all was OK w/the wiring), try turning the idle mixture screw 1/2 turn out from where it is now. If that helps, hook up a vacuum gage or use the tach to adjust the idle mixture screws until you get the best vacuum/highest idle speed.
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