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#1 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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Divorced choke problems
I got a qjet on my 68 1/2 ton. Divorced choke is not pulling the choke level down to engage the choke. I have made the rod longer and still no go. One thing I did notice is that the metal spiral ( i cant think of the name of it) is being pulled up. What am I doing wrong here?
Thanks
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RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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#2 |
Senior Member
Join Date: Jan 2005
Location: Loveland Co.
Posts: 3,098
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Is it the factory intake?
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Chris 74 Custom Deluxe SWB 350/350/3.73’s 99 2wd Silverado RCSB 5.3/4L60/3.90’s http://www.classictrucks.com/feature...short_bed.html |
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#3 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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Nope its a edelbrock performer 2101.
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RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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#4 |
New Member
Join Date: Jun 2002
Location: Lyons Michigan
Posts: 10
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You can get a choke thermastat, or coil, that pulls the other way.
I sold many back when they all had points and condenser. Go to a parts store that has old guys working there and they will know what you need. Type of intake will not matter, you have the right idea, making the rod yourself to fit. It will work fine after you get the proper choke coil. |
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#5 |
Registered User
Join Date: Jul 2002
Location: SE NM
Posts: 769
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You do know that you have the open the throttle a bit to set the choke? By making the rod longer it wouldnt pull down as far.
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The more I learn about women, the more I love my truck. |
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#6 |
New Member
Join Date: Jun 2002
Location: Lyons Michigan
Posts: 10
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That is true but you want to check the choke coil operation by warming it with a lighter. When fully warm it will hold the choke flap fully open. Later types have vacuum pull offs to help pull the choke flap open, you may have that kind. If so check the pull off operation with a vacuum pump. The vacuum pull off will work with the engine running and has no effect when the engine isnt running. I use coat hanger wire to make a linkage to the proper length, some times I make a few before I have the right one.
Also the choke linkage will push the choke flap closed when you push the throttle all the way open, WHEN COLD. For proper performance the choke flap must open all the way when at operating temp., if it stays partly closed the engine will run poorly and get bad gas mileage. Let me know if you have any problems, I may have missed something. |
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#7 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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Thanks guys. I am going to get a pic posted tonight when I get home. After reading this I think I may have missed something.
Thanks
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RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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#8 |
Jostrans68
Join Date: Mar 2001
Location: Bloomington indiana
Posts: 1,182
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you need to get the kit from edelbrock it is the rod and the heat coil and cover I have this setup in my 68
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![]() former 67-72 now with a 96 silverado |
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#9 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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I have the kit from edelbrock. Pn# 1931. Can you post a pic of your setup?
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RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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#10 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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here are the pics. I took off the dog house.
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RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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#11 |
Registered User
Join Date: Dec 2002
Location: Hills of Western Mass
Posts: 626
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Skokie. I think your problem is that the rod that goes down through the airhorn (the one I circled in pink) is not attached to the lever inside the carb. It looks off in the pic from where it should be. It is not easy to get this thing hooked up. get a flashlight and try to look down into the carb body and see if that thing is hooked up. it might move a little bit when you move the lower linkage (in green) even if it is not hooked into the tang inside there but from here it looks like it is not hooked in and is maybe just riding ontop of the tang. If the tang on the choke butterfly shaft has a screw in it then you are in luck because you can take it off and just fish the rod around in there and try to get it through the hole in the tang down inside the carb body. If it cannot be unscrewed then you are in for a little fun. You actually have to remove the airhorn and get it hooked in with the choke rod attached to the airhorn. I hope I am wrong because this is kind of a pain to get right if you have never done it before and somewhat hard to describe as well, but I think there is a good chance that that is what is going on here.
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86 Silverado C10 back to 305 power! 67 C30 Dually Dump, with 350 transplant, Rockhauler 05 Duramax 3500 "If at first you don't succeed, try a bigger hammer" Member of the 1-Ton club! |
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#12 |
Registered User
Join Date: Oct 2003
Location: San Jose Ca.
Posts: 3,335
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86silverado
I checked that lever and it is connected to the choke lever. Also for the heck of it I made my rod longer and low and behold it worked. Choke plate is about 2/3rds closed. Im not sure if its supposed to be 100% closed but hey its a start. I can make it a little longer and go from there. Thanks for the help.
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RIP to my son Dylan. 5/17/2002 - 8/18/2018 If you want to know more about rare forms of pediatric cancer or if you want to help fund pediatric cancer research, please check out the website for the non-profit I started. https://slothforpedcancer.org 68 build thread http://67-72chevytrucks.com/vboard/s...d.php?t=223234 |
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#13 |
New Member
Join Date: Jun 2002
Location: Lyons Michigan
Posts: 10
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Skokie, your engine is very clean and nice looking for a driver, you must be good at keeping up with all the little needs of the SBC. I am sure you will sort of these carb issues.
86 Silverado you are very knowledgeable about Qjets, are you an old school gear head? Carb operation is a lost art to some nowdays. Thanks all, Brewster |
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#14 |
Account Suspended
Join Date: Mar 2003
Location: ** THE FALL GUY **CHICAGO IL
Posts: 5,883
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the problem is you have a rod thats to long ...going from the choke coil on the intake going to the carb....
your choke plate is open.......and the coil can't retract any more |
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#15 |
Account Suspended
Join Date: Mar 2003
Location: ** THE FALL GUY **CHICAGO IL
Posts: 5,883
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this what it should look like cold
Last edited by rage'nrat638; 07-12-2007 at 07:05 AM. |
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#16 |
Registered User
Join Date: Dec 2002
Location: Hills of Western Mass
Posts: 626
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Glad you got it figured out. Just run it and see how it idles. In your neck of the woods you should be fine with it a little to the lean side of things and the choke will open faster that way anyway which will save you fuel. With that setup normally it is fully closed and as soon as it fires the choke pulloff opens it up about 1/8 of an inch or so but the feds in cali will probably love you if it is a little to the lean side anyway.
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86 Silverado C10 back to 305 power! 67 C30 Dually Dump, with 350 transplant, Rockhauler 05 Duramax 3500 "If at first you don't succeed, try a bigger hammer" Member of the 1-Ton club! |
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#17 | |
Registered User
Join Date: Dec 2002
Location: Hills of Western Mass
Posts: 626
|
Quote:
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86 Silverado C10 back to 305 power! 67 C30 Dually Dump, with 350 transplant, Rockhauler 05 Duramax 3500 "If at first you don't succeed, try a bigger hammer" Member of the 1-Ton club! |
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#18 |
Looking @ 67 Chevy Short Step
Join Date: Jul 2004
Location: Near Tyler, Texas
Posts: 136
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ttt
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#19 |
Registered User
Join Date: Jul 2002
Location: SE NM
Posts: 769
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If I remember right with the choke(fast idle) set and engine warmed up it should idle at about 1100-1200 rpm. Anybody else?
Im also manual choke.
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The more I learn about women, the more I love my truck. |
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