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Pancho79
11-10-2016, 02:07 PM
Both before and after i rebuilt it my Q-Jet has been leaking fuel from a vacuum port on the front and center of the carb. I'm at work right now so I'll post a picture later, but if anyone knows what I'm talking about please let me know what's going on and how to fix this.

F-Body International
11-11-2016, 09:37 AM
Has the float been set correctly?

If you have built a return style fuel system, make sure you haven't used the vapor line on the gas tank. It's is not a return and won't allow fuel to flow back.

Pancho79
11-11-2016, 10:42 AM
It's not a return style setup. I'll double check the float but it doesn't run like it's rich or floods out, it's just a very slow drip from that one port.

kimosabi
11-11-2016, 07:19 PM
What's your fuel pressure? Anything above 3-4psi and you're asking for trouble.

HandOverFist
11-12-2016, 06:23 AM
How old a Q-jet? Did you seal the main wells with marine epoxy/JB Weld?

https://static1.pt-content.com/images/pt/2016/11/sucp_110500_qjet_12quadrajet_carbutretor-1.jpg

Pancho79
11-21-2016, 02:24 PM
The float is working properly. I don't know what my pressure is at but the engine has an oem fuel pump on the block so I don't think it's exceeding what the carb needs.

It's off of some mid-seventies Chevrolet according to the number stamped on the side and it's from Jet Performance if that helps. I don't know what stage it is. I did not seal the main wells as I didn't even know that was necessary. What's the purpose of sealing them? Just for this kind of leak?

MonzaRacer
05-10-2017, 07:31 PM
Those plugs in the smaller angled channels also need sealed.