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Topic: carb issues

in Forum: C3 Fuel, Emission Control, and Exhaust Systems


carb issues

Posted: 11/6/05 4:25pm Message 1 of 13
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Greeting from sunny Florida. Our weather has been C3 friendly but I am having some carb problems. I went to the Ecklers reunion which was a 3 hour drive from the house. When I would punch it to get on the interstate it would choke up, i'd finally work it's self out but it's not right. Around town it's running too rich, there's smell of gas in the exhaust all the time. Any suggestions? I know enough about carb's to be dangerious and  I do know they can be touchy. Any tricks I can try prior to taking it into the shop?


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carb issues

Posted: 11/6/05 4:46pm Message 2 of 13
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Easton, PA - USA
Joined: 11/6/2003
Posts: 232
Vette(s): 1973 Coupe 350 Auto.T-Tops L48,65450 miles.
 Check to see if the choke is being sucked closed,possible choke pull off not working. Does it choke itself out in the morning when you start it ?


carb issues

Posted: 11/6/05 5:56pm Message 3 of 13
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Sounds like a stuck/malfunctioning choke to me, too.


Joel Adams
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carb issues

Posted: 11/7/05 2:24am Message 4 of 13
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New Zealand
Joined: 3/26/2005
Posts: 232
Vette(s): Silver '81 mostly original C3. Silver interior, bilstiens, big sway bars, headers.
Yep, I'd go with the check the choke option first also.
Is it a Q-Jet ? I got to learrn lots about the Q-Jet
choke on my '81 as I returned it to fully operational
after previous owner had simply rendered it inoperative
presumably 'cos it went faulty. Let me know...

Kiwi Chris


Kiwi Chris

carb issues

Posted: 11/19/05 9:56pm Message 5 of 13
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Poquoson, VA - USA
Joined: 11/20/2004
Posts: 1023
Vette(s): 73 Conv, Blue-Green/White Top - 454, M21 - Dark Saddle Leather, Power Windows, A/C, Tilt/Tele, AM/FM St. (orig. and sounds like it too).#2 -- 2007 Coupe,3 LT package, Z51 option, Victory Red, Ebony Int. Clear Top.

[QUOTE=CeeDee]Yep, I'd go with the check the choke option first also.
Is it a Q-Jet ? I got to learrn lots about the Q-Jet
choke on my '81 as I returned it to fully operational
after previous owner had simply rendered it inoperative
presumably 'cos it went faulty. Let me know...

Kiwi Chris [/QUOTE]

 Just rebuilt mine and they are really not that difficult... a couple tricks as far as assembly. Comes apart in 3 sections... I think Ken has a post on here with details of a rebuild... Mine was running fine but I wanted to clean it up and decided to do the rebuild too... looks and runs fine now...... I didn't have to mess withthe choke so that was not an issue for me... and if you follow Ken's tips to the letter... should not be a problem.. I did forget one thing tho... the black cover that goes over the float and getting the top gasket down over the primary pump... also make sure the primary pump is seated all the way.. easy things to look over... i made mistake of getting in a hurry...

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carb issues

Posted: 11/19/05 10:07pm Message 6 of 13
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Go to HERE, and click on "Ken's Projects", and then click on the "Quadrajet" icon. It is a detailed description of the quadrapuke rebuild procedure.


btw.........this should be in the "Fuel/emiss." forum! Adams' Apple38675.9229513889


Joel Adams
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(click for Texas-sized view!)
             NCRS

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carb issues

Posted: 11/19/05 10:44pm Message 7 of 13
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sonoma, CA - USA
Joined: 8/9/2002
Posts: 784
Vette(s): 72 LT-1 AC coupe,69 l-36 coupe
Stuck float, dirt needle valve assy. choke pull off.




carb issues

Posted: 11/21/05 2:28pm Message 8 of 13
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Poquoson, VA - USA
Joined: 11/20/2004
Posts: 1023
Vette(s): 73 Conv, Blue-Green/White Top - 454, M21 - Dark Saddle Leather, Power Windows, A/C, Tilt/Tele, AM/FM St. (orig. and sounds like it too).#2 -- 2007 Coupe,3 LT package, Z51 option, Victory Red, Ebony Int. Clear Top.

[QUOTE=72 blue shark]Greeting from sunny Florida. Our weather has been C3 friendly but I am having some carb problems. I went to the Ecklers reunion which was a 3 hour drive from the house. When I would punch it to get on the interstate it would choke up, i'd finally work it's self out but it's not right. Around town it's running too rich, there's smell of gas in the exhaust all the time. Any suggestions? I know enough about carb's to be dangerious and  I do know they can be touchy. Any tricks I can try prior to taking it into the shop?[/QUOTE]

Just my 2 cents... Is it carb or is it possible ignition?... I had a plug wire loose one time and it had the smell of unburned gas too and idled pretty smooth but just not much on top end.. ...




Lifetime Member #86

USN 1966-1970

WestPac 67-68 Tet I&II


Featured in Corvette Enthusiast Aug 2007 "Shark Attack"
Blue Green *** 454,4 Spd, Dark Saddle Leather, A/C, AM-FM St. (orig), PW, Tilt -Tele Wheel"



(click to see a bigger image)


carb issues

Posted: 12/14/05 6:16pm Message 9 of 13
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Well I took the car into the shop they are tell me to rebuild or replace. They are saying I am having a vacume problem, it's not down shifting when I punch it. So then the carb fills with fuel and chokes out. I ordered a Holley 650 cfm. I going to put it on and see if that doesn't take care of it, if not to the shop it goes. The trans was rebuilt prior to my buying her so I don't think that's the issue. This whole issue of carbrators is a hard one not being an expert. I don't race or even have a heavy foot for that matter. So I just took the simple way out. It was suggested that I change out the intake at the same time. This is all a hard sell with the misses being it's holiday time. I guess I just bought MY Christmas gift, a carbrator! Thanks for all the input and suggestions.


carb issues

Posted: 12/14/05 6:40pm Message 10 of 13
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BINGHAMTON, NY - USA
Joined: 7/19/2003
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Vette(s): ......
If the Holley is not a spreadbore like your Q-Jet,you are going to have to change your manifold ,


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in Forum: C3 Fuel, Emission Control, and Exhaust Systems


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