No heat at the automatic choke continues.

[Bob S.]

OK Here we go. The advice Stu and others gave was 100% on. My automatic choke was not opening due to lack of heat coming up from the choke tube. This was caused by a lack of vacuum to the choke.
To find out the problem I removed the carburator and tried to pass compressed air through the vacauum port. No luck. I removed the throttle body and found the restriction in the passage and cleared it. As I was preparing to reassemble the carburator I noticed the the vacuum passage in the throttle body goes no where when it gets to the mainbody.
The first picture shows the throttle body and where the vacuum passage comes out. The second picture shows where that passage lines up with the mainbody. (I put some white paper behind the gasket to highlight)
The parts are all correct according to the JG. Air horn cast "6-1396"; mainbody cast "0-1208"; throttle body cast "1-1582".

What am I missing here?

Sully

[Stuart F.]

Re: No heat at the automatic choke continues.

Bob;

It's been awhile since I worked a WCFB, and I have not consulted any of my references as yet (it's late). But, off hand by looking at your pictures, it appears that your center section gasket may be mismatched. My advice at this juncture is to study the path carefully even using a small flexible wire probe, if necessary, to see if the gasket is aligning the ports from the center section to the base correctly.

If I get time tomorrow I will compare your pictures to some from my reference file and repost. Hopefully, some of the other pseudo carb experts like myself will jump in and help you out.

Stu Fox

[Bob S.]

Re: No heat at the automatic choke continues.

Stu,
I just showed the wrong side of the of the mainbody. If you look in the upper left corner you will see that where there is a hole in hte gasket there is no coresponding hole in the bottom of the mainbody.
Sully

[Clem Z.]

Re: No heat at the automatic choke continues.

i believe the vacuum hole in the main body is on the other side from the one you highlighted. the vacuum hole for the choke is the one in the oval shaped hole in the gasket on the left in your main body picture

[Bob S.]

Re: No heat at the automatic choke continues.

Here is the corrected picture of the mainbody. The white dot in the upper left is where the throttle body vacuum port lines up with the mainbody. The oval shped hole next to it has the threaded hole for the throttle body attachement and the hole in the same oval in the gasket goes nowhere. You can see the bottom with a flashlight.

[Clem Z.]

Re: No heat at the automatic choke continues.

Here is the corrected picture of the mainbody. The white dot in the upper left is where the throttle body vacuum port lines up with the mainbody. The oval shped hole next to it has the threaded hole for the throttle body attachement and the hole in the same oval in the gasket goes nowhere. You can see the bottom with a flashlight.

post a picture of the top view of the main body because the vacuum hole should be were i posted the picture before in the other post about this.

[Bob S.]

Re: No heat at the automatic choke continues.

I have not removed the air horn from the mainbody/float bowl if that is the sice you are referring to.

[Clem Z.]

Re: No heat at the automatic choke continues.

I have not removed the air horn from the mainbody/float bowl if that is the sice you are referring to.

yes that would be the picture we need. then we can tell if the hole was drilled or was not. if the hole is there but not clear thru you can use that hole as a guide to drill the rest of the way thru the casting.

[Clem Z.]

Re: No heat at the automatic choke continues.

yes that would be the picture we need. then we can tell if the hole was drilled or was not. if the hole is there but not clear thru you can use that hole as a guide to drill the rest of the way thru the casting.

QUESTION since 2X4 carbs did not have a choke on the front carb could this be a main body for that carb used on a carb with a choke ??? just wondering

[Bob S.]

Re: No heat at the automatic choke continues.

That sound logical. I'll take it apart tonight and look.

[Stuart F.]

Re: No heat at the automatic choke continues.

Clem might be on to something, but I thought you had verified the section part numbers. Do you by any chance know the history of the car? Does anything else look to be messed with by Bubba?

Stu Fox