The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 05-17-2014, 11:56 PM   #1
BADAZ chevy guy
Registered User
 
BADAZ chevy guy's Avatar
 
Join Date: Mar 2014
Location: Clearfield Utah
Posts: 638
Q-Jet trouble and solution

Ever had the secondaries stick open? I fought with my Q-Jet almost all day before I figured it out. The top secondary butterflies would open with full throttle, but then then they would stick and flood the engine. It turns out there's a plug at the end of the shaft (opposite from the tension spring) that was pushed in to far and binding the against the end of the shaft.
A gentile tap with a hammer on the other end of the shaft solved the problem.
__________________
My build thread. 1977 C10 short box. >>>> http://67-72chevytrucks.com/vboard/s...d.php?t=624182

700R4 build thread. >>> http://67-72chevytrucks.com/vboard/s...36#post6740236
BADAZ chevy guy is offline   Reply With Quote
Old 05-18-2014, 12:11 AM   #2
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 13,733
Re: Q-Jet trouble and solution

Interesting!
You got a pic of this plug.
Never ran into that before but I've had the spring break.
geezer#99 is offline   Reply With Quote
Old 05-18-2014, 12:18 AM   #3
BADAZ chevy guy
Registered User
 
BADAZ chevy guy's Avatar
 
Join Date: Mar 2014
Location: Clearfield Utah
Posts: 638
Re: Q-Jet trouble and solution

Quote:
Originally Posted by geezer#99 View Post
Interesting!
You got a pic of this plug.
Never ran into that before but I've had the spring break.
My camera isn't working. But if you look on the Left (drivers) side of the carb at the end of the secondary shaft you'll see a plug in the air horn casting in line with the shaft. If it's pushed in to far it will bind on the end of the shaft. It took me all day to figure it out. lol
__________________
My build thread. 1977 C10 short box. >>>> http://67-72chevytrucks.com/vboard/s...d.php?t=624182

700R4 build thread. >>> http://67-72chevytrucks.com/vboard/s...36#post6740236
BADAZ chevy guy is offline   Reply With Quote
Old 05-18-2014, 12:34 AM   #4
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 13,733
Re: Q-Jet trouble and solution

I checked some links and I see what you're talking about. Must have been a locating hole when they machined the top plate. Plugged to keep dirt away from the shaft.
geezer#99 is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 10:16 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com