Edelbrock choke not setting?
Thread Starter
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Tuned
Joined: Aug 2011
Posts: 282
Likes: 2
Edelbrock choke not setting?
I posted over in the General Engine section and realized I may have posted in the wrong place. Now that I made a video of the problem, I'm hoping someone can help.
The choke is never setting. Something in my throttle linkage is wrong or sticky and it doesn't flip up the lever that engages the choke?
Hard to explain. Hopefully the video makes it clear?
The choke is never setting. Something in my throttle linkage is wrong or sticky and it doesn't flip up the lever that engages the choke?
Hard to explain. Hopefully the video makes it clear?
Elder User
Joined: Mar 2013
Posts: 847
Likes: 4
From: In my house..
There's nothing wrong with it, you adjust the choke when it's cold by (holding the throttle open) and then rotating the choke thermostat cover until the choke plate just closes, when the choke is closed the 2-step fast idle cam should be engaged, the little piece you are flipping around is the fast idle cam, you can't set the choke with throttle closed..
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Tuned
Joined: Aug 2011
Posts: 282
Likes: 2
Well, I can't get it to fast idle (and when it does, it comes off the fast idle as soon as I touch the throttle.)
I can see on the choke side that it should slowly come off the fast idle as the choke opens but this is not what it does.... Basically -- the truck is hard to start. When it does start, it runs great on the fast idle but if you touch the throttle before its warm, it dies.
Once warm it idles and runs perfectly.
I can see on the choke side that it should slowly come off the fast idle as the choke opens but this is not what it does.... Basically -- the truck is hard to start. When it does start, it runs great on the fast idle but if you touch the throttle before its warm, it dies.
Once warm it idles and runs perfectly.
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
Back out the mixture screws about 1/2 turn. Also, where is your choke voltage coming from? It should be from the alternator stator wire.
You also need to adjust the choke tighter as mentioned above.
You also need to adjust the choke tighter as mentioned above.
Thread Starter
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Tuned
Joined: Aug 2011
Posts: 282
Likes: 2
When cold I can't get the choke adjustment far enough forward to close the choke -- unless I flip up that lever on the throttle side that you see towards the end of the video. And I can only get that lever to engage by pushing it with my hand. I can't get the gas-pedal/throttle linkage to engage it (only to dis-engage it.)
The entire video is shot with a cold engine that hadn't been started or had the key on in 3 days. I double-checked that there is not 12v at the automatic choke spring until the key is on.
My choke voltage is coming from a switched +12v on the fuse-box that also powers the coil on my HEI carb.
The entire video is shot with a cold engine that hadn't been started or had the key on in 3 days. I double-checked that there is not 12v at the automatic choke spring until the key is on.
My choke voltage is coming from a switched +12v on the fuse-box that also powers the coil on my HEI carb.
Elder User
Joined: Mar 2013
Posts: 847
Likes: 4
From: In my house..
Well, I can't get it to fast idle (and when it does, it comes off the fast idle as soon as I touch the throttle.)
I can see on the choke side that it should slowly come off the fast idle as the choke opens but this is not what it does.... Basically -- the truck is hard to start. When it does start, it runs great on the fast idle but if you touch the throttle before its warm, it dies.
Once warm it idles and runs perfectly.
I can see on the choke side that it should slowly come off the fast idle as the choke opens but this is not what it does.... Basically -- the truck is hard to start. When it does start, it runs great on the fast idle but if you touch the throttle before its warm, it dies.
Once warm it idles and runs perfectly.
The idle air screws are too tight also, back them out as suggested and then back them out some more until they have no effect on idle speed or quality, now turn them back in 1/2 turn at a time until the idle speed becomes to drop and stop.
Thread Starter
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Tuned
Joined: Aug 2011
Posts: 282
Likes: 2
I twisted the choke thermostat another 90 degrees and it didn't push it any further closed. I know I sound like a broken record but shouldn't the throttle linkage being "Setting" the choke??
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Moderator
Joined: Dec 2001
Posts: 22,436
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From: Louisville,Ky.
It sounds like the choke spring under the black cap is not properly attached to the choke lever. Remove the choke cap and reseat the linkage to the spring.
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Thread Starter
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Tuned
Joined: Aug 2011
Posts: 282
Likes: 2
Again -- I can adjust it and get it closed properly, but only if I have the choke "set" (like I am flipping the linkage behind the throttle at the end of the video.) Once that lever is in the "set" (or up) position, the adjustment on the black cap works as it should.
The problem/issue is that I can't get that choke lever to "set" without using my hand.
How does your choke set?
The problem/issue is that I can't get that choke lever to "set" without using my hand.
How does your choke set?
Moderator
Joined: Dec 2001
Posts: 22,436
Likes: 17
From: Louisville,Ky.
Once I have it set when I want it. When ever it is cold, i just pump the throttle a couple of times to prime it. The flap closes when I push the throttle the first time.
I'm not sure why yours does not close when cold and you open the throttle.
I'm not sure why yours does not close when cold and you open the throttle.
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
The choke should snap shut when you open the throttle. If it does NOT, the choke is not adjusted properly, or it's warmed up. With the choke cooled off and the throttle open (to free the fast idle linkage), rotating the choke should open and close the choke plate. If it does NOT, either the choke tang is not grabbing the choke plate lever, or the linkage is binding.
Thread Starter
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Tuned
Joined: Aug 2011
Posts: 282
Likes: 2
The choke should snap shut when you open the throttle. If it does NOT, the choke is not adjusted properly, or it's warmed up. With the choke cooled off and the throttle open (to free the fast idle linkage), rotating the choke should open and close the choke plate. If it does NOT, either the choke tang is not grabbing the choke plate lever, or the linkage is binding.
MSEE
Joined: Apr 2004
Posts: 10,386
Likes: 35
From: Austin, TX
Can you rotate the choke cap, and watch the choke plate rotate? The choke tang needs to "hook" the tab under the cap. There are no springs, just the rotating lever on the choke housing, and a link to run up to the choke plate.