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Old 12-03-2021, 12:09 AM   #1
cwcarpenter98
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Possible Quadrajet issue

Disclaimer, I haven't rebuilt a carb yet, but at some point I will

Anyways, of course, my Quadrajet carb book is back at home, so the answer might be in that, but I figured I would ask while I'm still here in Milly.

On the vacuum port circled in red, I pulled the cap off and fuel spilled out
It doesn't seem that fuel is coming out when the cap is on though. Also, when I put the cap back on, I noticed the port was a little bit loose and air bubbles formed around where the port goes into the carb body.

Picture is from when I first put the carb on the engine over 3 years ago.

Anyone seen that before? Have any advice?

Thanks!
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1963 C10 - Frankentruck 283, 3 speed with overdrive
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Old 12-03-2021, 01:10 AM   #2
geezer#99
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Re: Possible Quadrajet issue

It’s a carb vent. Used to vent fumes.
Normally hooked to the charcoal canister with a long hose.
If there’s fuel present it could be from from flooding or from the carb having fuel in the bowl and the carb being tilted forward.

A secondary thought.
The carb return spring should be Hooked rearward as low as possible back to the cable bracket.
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Old 12-03-2021, 08:00 AM   #3
cadillac_al
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Re: Possible Quadrajet issue

I put all my throttle springs toward the front. Putting them toward the rear looks more convenient but that is what wears the throttle shaft bushing.
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Old 12-03-2021, 03:32 PM   #4
cwcarpenter98
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Re: Possible Quadrajet issue

The driveway at my house in Milledgeville does have a bit of a slope down, so when I back in, the nose is definitely not flat. It's running good otherwise, so I'm hoping it's not flooding and that all it is is the parking angle.

On the return spring, I used the one from the old two barrel attached to the factory tab on the oil fill tube. It's been working nicely that way since I put this carb on
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1963 C10 - Frankentruck 283, 3 speed with overdrive
Overdrive wiring here
1995 Dodge Dakota Sport

"I'll put it simple: if you're going hard enough left, you'll find yourself turning right." - Doc Hudson
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Old 12-19-2021, 04:50 PM   #5
crazy longhorn
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Re: Possible Quadrajet issue

Quote:
Originally Posted by geezer#99 View Post
Itís a carb vent. Used to vent fumes.
Normally hooked to the charcoal canister with a long hose.
If thereís fuel present it could be from from flooding or from the carb having fuel in the bowl and the carb being tilted forward.

A secondary thought.
The carb return spring should be Hooked rearward as low as possible back to the cable bracket.
From one geezzer to another....I agree, hook the springs low. IMHO, you will have less wear, & better control on the throttle longhorn(the crazy old man). you can take it , for what it is worth.....60,s stuff (factory) put the springs up top.From what I have seen, that caused more wear on the throttle shafts.
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