General Discussion Discuss your Oldsmobile or other car-related topics.

Any Quadrajet pros out there?

Thread Tools
 
Search this Thread
 
Old Oct 10, 2009 | 10:44 AM
  #1  
nukesec1's Avatar
Thread Starter
Registered User
 
Joined: Feb 2009
Posts: 164
From: East Central Illinois
Any Quadrajet pros out there?

Well, I got the carb back together and it just doesn't seem to work right. Something is a little "hinky" and I can't put my finger on it. I haven't got it back on the car yet and I can't for the life of me recall what happened or was suppose to happen when I manually worked the throttle linkage. The primary and secondary plates open like they are suppose to, but the choke doesn't appear to be working correctly and when opened to full throttle the secondary flaps (ontop of the carb (can't recall the correct term at the moment) don't open at all and I can't remember if they did before I took it apart. Hmmmmm.....? Any feedback you guys/girls can give would be appreciated. I'm pretty sure I'll have to adjust the choke once I get it all back on the car. If it runs right or will run at all!
Old Oct 10, 2009 | 01:00 PM
  #2  
Oldsguy's Avatar
Past Administrator
 
Joined: May 2004
Posts: 10,363
From: Rural Waxahachie Texas
The secondary air valves don't open manually without the engine running. But I think there is an air valve lockout mechanism too that prevents them from opening when the choke is still engaged. You should be able to get them to move manually but it takes two hands and the carb has to be setting high off the table top so the throttle plates can move, plus the choke has to be fully dis-engaged. Then when you pull the throttle all the way open you can manually open the air valves with your second (or third) hand....
Does that make sense?
Old Oct 10, 2009 | 01:12 PM
  #3  
nukesec1's Avatar
Thread Starter
Registered User
 
Joined: Feb 2009
Posts: 164
From: East Central Illinois
Yeah, there's a little tang that holds them closed until the choke plate opens past a certain point and trips that little tang doo-hickey. I'm pretty sure I got it all back together correctly (no spare parts), it's just been several years since I've torn into one.
Old Oct 10, 2009 | 01:41 PM
  #4  
svnt442's Avatar
Registered User
 
Joined: Jun 2009
Posts: 4,293
From: Palm Bay, FL
You're going to have to get it on the car to check for proper operation. The rear air valves are closed until the choke opens.
Old Oct 10, 2009 | 07:53 PM
  #5  
woodie582's Avatar
Registered User
 
Joined: Jul 2008
Posts: 417
From: Santa Rosa Ca
I find the service manual to be a very good source of information.
Old Oct 10, 2009 | 11:15 PM
  #6  
nukesec1's Avatar
Thread Starter
Registered User
 
Joined: Feb 2009
Posts: 164
From: East Central Illinois
Originally Posted by woodie582
I find the service manual to be a very good source of information.
Touche Woodie! You are correct, sir. A service manual would be like gold for me right now. That's my next purchase before I decide anything else needs done that requires mechanical! LOL!
Old Oct 10, 2009 | 11:26 PM
  #7  
woodie582's Avatar
Registered User
 
Joined: Jul 2008
Posts: 417
From: Santa Rosa Ca
Yep nuke, nothing better than that good book. When I was diagnosing my choke set up to see and read exactly how things function and the sequence that they operate in removes a lot of doubt.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dave1978
Cutlass
75
Jan 9, 2021 07:13 AM
Zrzoun
Other
14
Aug 16, 2015 08:45 AM
Guitar40
Cutlass
10
Jul 15, 2012 10:02 PM
Coltonis
Parts Wanted
5
Apr 24, 2009 05:07 PM
Nailhead 88
Eighty-Eight
2
Jan 8, 2008 05:20 AM




All times are GMT -7. The time now is 06:10 AM.