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Hose Barb on Q-Jet Choke Housing: What Does it Go To?

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Old Feb 12, 2013 | 07:45 PM
  #1  
zbowles's Avatar
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From: Kentucky
Car: '84 Monte Carlo SS, '84 Z/28
Engine: GMPP 350, stock 305
Transmission: TH350, 700r4
Axle/Gears: 3.42 open, 3.23 posi
Hose Barb on Q-Jet Choke Housing: What Does it Go To?

I have it plugged as of now. I believe it needs to go to some heat or vacuum source and it may help it hold open the choke longer until the engine is really warm. I've been having trouble with it not wanting to warm up very well. Need to know what and where to hook it up to. Any help would be greatly appreciated.

Hose Barb on Q-Jet Choke Housing: What Does it Go To?-photo-1-.jpg
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Old Feb 12, 2013 | 08:12 PM
  #2  
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Hose Barb on Q-Jet Choke Housing: What Does it Go To?

Originally Posted by zbowles
it may help it hold open the choke longer until the engine is really warm.
Nope,
the hot air turns the choke off sooner than if you have it disconnected the way yours is now ( assuming it is working )

http://www.chevelles.com/forums/show...12&postcount=2

Does the choke actually operate and is adjusted correctly ?
http://www.hemmings.com/mus/stories/...hmn_tips2.html
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Old Feb 12, 2013 | 08:28 PM
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Re: Hose Barb on Q-Jet Choke Housing: What Does it Go To?

Doesn't really "go" anywhere... there's a tiny vacuum hole in the back that tries to draw air into the intake, and there's a little air filter in that "barb", that cleans up the make-up air.
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Old Feb 12, 2013 | 08:41 PM
  #4  
zbowles's Avatar
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Joined: May 2012
Posts: 26
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From: Kentucky
Car: '84 Monte Carlo SS, '84 Z/28
Engine: GMPP 350, stock 305
Transmission: TH350, 700r4
Axle/Gears: 3.42 open, 3.23 posi
Re: Hose Barb on Q-Jet Choke Housing: What Does it Go To?

Originally Posted by vetteoz
Nope,
the hot air turns the choke off sooner than if you have it disconnected the way yours is now ( assuming it is working )

http://www.chevelles.com/forums/show...12&postcount=2

Does the choke actually operate and is adjusted correctly ?
http://www.hemmings.com/mus/stories/...hmn_tips2.html
I meant hold the choke closed. I'm really tired, yesterday the car blew a fuse and I drove home in the dark and its been one thing after another today. Choke is fine, just needs fine tuning. I know it runs to the heat riser. I'm running an Edelbrock Performer with a block-off, do I need to drill and tap it to put it a hose barb and run a hose between them?
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Old Feb 12, 2013 | 11:00 PM
  #5  
vetteoz's Avatar
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: Hose Barb on Q-Jet Choke Housing: What Does it Go To?

Originally Posted by zbowles
I meant hold the choke closed.
As described in the links, the opposite
Spring inside the housing closes the choke ; heating the spring lets the choke open

Last edited by vetteoz; Feb 13, 2013 at 06:30 AM.
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Old Feb 13, 2013 | 05:52 AM
  #6  
Damon's Avatar
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Re: Hose Barb on Q-Jet Choke Housing: What Does it Go To?

Since you already converted it to electric choke that port doesn't serve a purpose any more. Leave it capped.
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