Choke issues on quadrajet.
 

So i'm having issues with the quadrajet on my 84 i adjust it like it should with the choke flap almost all the way down but it doesn't seem to be working right the truck starts right up runs for about 5 seconds then the choke opens and it dies… Its electric choke btw. Could the spring inside be bad?

Re: Choke issues on quadrajet.
 

Take it apart and look.

Re: Choke issues on quadrajet.
 

thanks thats helpful because i didn't already do that…. How do i know if the choke thermostat is bad

Re: Choke issues on quadrajet.
 

From the position you're describing, here's what I would do.

1. On full cold choke situation (i.e. sat all night, ready to start on cold morning), the flap will be all the way down once it's set (get in the cab and push the gas to the floor once). Once it's set, pure cold, don't even crank it yet... double check that the flap is now all the way closed. If not, adjust it so that it is.

2. Try to start it. Adjust high idle as needed. About a minute or two with the ignition in the on position constantly will get the choke to open some of the way. Heat from the engine warming up will open it the rest of the way.