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Old 09-27-2020, 07:54 AM   #1
OUbesto
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Join Date: Oct 2015
Location: Lincolnshire, IL / Burlington, WI
Posts: 209
Need help with fast idle cam not working

I have a Holley 4 bbl model #1850-3 with electronic choke on my '70 C-10 BB. The choke works perfect. However, the fast idle does not kick in when the engine is cold. I Have adjusted the fast idle adjustment screw in both directions (in and out) but it does not change the RPM. Should I be able to slightly rotate the cam by hand when I first cold start the engine and force an increase in RPM?

Any thoughts? Suggestions?
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1970 C-10 CST, LWB, 402/400, A/C
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