Electric Choke Problems...again

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Aug 12, 2008 | 10:30 PM

matthnatow

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Electric Choke Problems...again

Hey guys, I posted earlier about where to hook up the electric choke on my 1984 460... well I got it hooked up right, I even watched the flap open when the key was on.(Edelbrock 1406, btw) So I thought it was workin good But, when I go to start up the truck now, I need to still play with the gas for it to warm up. Is this normal, shouldn't the truck warm up on its own with the choke? Also, I looked at the choke flap while the engine was "cold" and its about halfway open... Is this because the spring in the electric choke housing is warm from outside temp? (Oh yea...south texas...105-115 degrees when I looked at it...)

How can I get this choke to work right?

Aug 13, 2008 | 12:14 AM

fmc400

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From: Austin, TX

Try loosening the choke cap, rotating it toward the back of the truck a little, and then tightening it back up. This will make it a little more rich.

Aug 13, 2008 | 01:12 PM

matthnatow

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Could this be why the flap is not closing all the way when the truck is cool?

Aug 13, 2008 | 03:27 PM

matthnatow

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Hey there, sorry about posting twice, but I went outside and fooled around with the carb again. Anyways, I adjusted the choke housing so it would run more rich. And also, I found that the choke flap wasn't closing because of a screw that was in too far on the throttle plate side. So I let it out a bunch and now the flap closes most of the way. Is this back to normal?

I haven't started it up yet but we'll see later this evening when I'll drive it.

Aug 13, 2008 | 06:18 PM

fmc400

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From: Austin, TX

That sounds like you changed the fast idle screw; that's not necessarily what you wanted to do. When the choke is cooled down, it won't snap shut until you open the throttle.

Aug 13, 2008 | 10:40 PM

matthnatow

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The idle seemed to be ok after running it... You mentioned that the flap should close when the throttle is open? Shouldnt the choke flap open up? A little confused here

Sorry for the newbie questions....

Aug 14, 2008 | 08:48 AM

jimdandy

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When you shut the truck off, and it cools down, the choke will not close all the way due to the stepped eccentric that you adjusted. When you go to restart the truck, you depress the accelerator slightly and this allows the spring to close the choke. If you depress the accelerator all the way to the floor, the choke will open slightly.

The stepped eccentric is there to raise idle when the truck is cold. Once warm, the choke moves the eccentric to the lowest idle position.

Most chokes are wired to the alternator so there is no voltage until the engine starts. If it is wired directly to a voltage source, it will start to open immediately.