Carb Choke Question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

kens65fb · 11-04-2022, 05:38 PM

We just installed an Eddelbrock 650 CFM on my buddies truck.

When it starts in the morning the choke seems to work, but the idle is way to slow ( 600RPM) I've read that the high speed idle when the choke first comes on should be about 1200 rpm or so.

I know that the fast idle screw is located beneath the regular idle screw, that is where you can increase the cold idle.

What direction do you rotate the screw to INCREASE idle speed, clockwise or counterclockwise ??

**The Rocknrod** · 11-04-2022, 08:19 PM

You can download the manual and see on page #9 here - https://www.google.com/url?sa=t&rct=...sRwBEibZZz7Gl1
It's an auto download page, check your downloads once clicked.

**Wrenchbender Ret** · 11-07-2022, 01:35 PM

You turn the screw clockwise to increase the speed.

George

kens65fb · 11-07-2022, 04:55 PM

Quote:

Originally Posted by Wrenchbender Ret

You turn the screw clockwise to increase the speed.

George

Thanks, I apperciate the response.

11-04-2022, 05:38 PM	#1
kens65fb Registered User Join Date: Dec 2018 Location: Dallas, PA Posts: 549	Carb Choke Question We just installed an Eddelbrock 650 CFM on my buddies truck. When it starts in the morning the choke seems to work, but the idle is way to slow ( 600RPM) I've read that the high speed idle when the choke first comes on should be about 1200 rpm or so. I know that the fast idle screw is located beneath the regular idle screw, that is where you can increase the cold idle. What direction do you rotate the screw to INCREASE idle speed, clockwise or counterclockwise ??

11-04-2022, 08:19 PM	#2
The Rocknrod Moderator Join Date: Aug 2011 Location: China Spring, TX Posts: 7,280	Re: Carb Choke Question You can download the manual and see on page #9 here - https://www.google.com/url?sa=t&rct=...sRwBEibZZz7Gl1 It's an auto download page, check your downloads once clicked. __________________ Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats?

11-07-2022, 01:35 PM	#3
Wrenchbender Ret Registered User Join Date: Oct 2005 Location: Overland Park, Ks. Posts: 5,194	Re: Carb Choke Question You turn the screw clockwise to increase the speed. George



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