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Choke and Idle speed

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briang0

Regular Contributor
I have and edelbrock 1409 Carb

I have and edelbrock 1409 Carb on my BB Chevy. I have it wired so that it get energize when I turn the key on. I noticed that the screw that adjusts the "high" idle speed had been removed. Should it be there? If so what speed should I set the high Idle to.
 
"I recall only one speed adjus

"I recall only one speed adjusment screw. That's the control stop, controlling the minimum butterfly opening. There is not a screw for fast idle."
 
"Brian, could you be talking a

"Brian, could you be talking about the screw that sets the idle position on the throttle plate?"
 
"An automotive carb has two id

"An automotive carb has two idle speed screws, one that functions when the choke is closed (or partially) and the other when the choke is fully open. Marine carbs, having throttle setups that allow one to set the idle speed where you want it--and have it stay there--usually dispense with the choke related idle speed screw.

Jeff"
 
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