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Discussion Starter #1
Have a SLIGHT miss during idle, idle is also a little rough. Any suggestions?.


429, edelbrock performer carb, cam (hydraulic), lifters. 60 over, fresh rebuild, runs strong higher rpm. No backfire, etc.
 

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Hello,
Try the simple stuff first.
1. - Check fuel filter
2. - Dirty air cleaner
3.- Idle adjustments

Then check wires, plugs, cap etc.
I find many times it is just a little thing that causes grief.
How is the gas? - Try a bottle of carb cleaner.

Just a few small ideas.......Print Dad
 

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I am with PrintDad here. Check your tune before anything else. Idle mixture and plug gaps. Check the choke settings and the timing. It doesn't sound like a fuel problem because under a load it improves. It could be a valve adjustment problem as they tend to disappear with speed as well.
 

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Discussion Starter #5
Thanks guy's I appreciate it. I hooked up the vacuum gauge and was surprised to see a very slight but rapid flickering needle at idle. Stayed slight rapid flickering as rpm rose. Have a reading of 19 at idle, Im thinking I may have a problem in the ignition system somewhere? Running about 10 deg btdc. Very slight but rapid flickering needle, does not even drop a point.. Ignition?:headscratch:
 
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