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Old October 23rd, 2019, 04:00 AM   #15
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Join Date: May 2011
Location: England
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Default Re: Holley 2100 info wanted

Originally Posted by kustomkreep86 View Post
Not having the heat risers functioning could cause a rich condition as well. Without the heat riser heating the the intake runner, the fuel can't atomize properly. When the engine is running, the intake directly under the carb gets super cold. I ran into that problem with a plugged heat riser tube. Mine was like ice cold. The cold air will cause the fuel to become dense and make big droplets rather than nice vapor of fuel.
I have a 12v manifold heater I'm going to fit to cure this. I have had it running but can't figure out how the fast idle cam is supposed to be working or what position to the screw to it should be.
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