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Coley · 02-13-2018, 09:46 PM

You should make sure the power connection for your HEI is rock solid.
Then, you should get an electrical tester and make sure you have 12 volts to the distributor....not 8, not 9......12 volts.
If you don't, the distributor may not fire correctly and it will give the impression of a bad tuning or carb problem....and this degradation can happen within the wiring. (ask me how I know)

Coley

02-13-2018, 09:46 PM	#9
Coley Registered User Join Date: Oct 2011 Location: Victoria, B.C Posts: 3,794	Re: Sudden idle problem You should make sure the power connection for your HEI is rock solid. Then, you should get an electrical tester and make sure you have 12 volts to the distributor....not 8, not 9......12 volts. If you don't, the distributor may not fire correctly and it will give the impression of a bad tuning or carb problem....and this degradation can happen within the wiring. (ask me how I know) Coley __________________ ....for some men, there is experience, skill and effort....for the others...there is visa and UPS LOL 1966 Chevy 1/2 ton (Florida- Red/white) 1972 Chevy 1/2 ton (California- Blue/white) 2005 Chevy Silverado HD2500/Duramax 2000 Dodge Ram 1500