v6 vaccum diagram?

i just bought a new 2g carb with auto choke, i was wondering what is the proper way to hook up all the vaccum lines and such. anyone have any pictures??

 

The line that goes to the vacuum advance on the distributor plugs into the front of the carb, passenger side. The pcv plugs into the rear of the carb, and IIRC the heater stuff goes to the intake manifold.

 

then where should i get the vaccum for the vaccum choke? off the ccv? just buy a t fitting?

 

yep, i bought a remanufactured 2g with an autochoke, it was supposed to be for a 71 jeepster commando. but i figured it would work on mine since its the same engine. maby its not vaccum, i dont know what it is, its not electric so maby it does go off hot air?? i dont know. any ideas?

 

it draws hot air from the passenger side exhaust manifold to operate the choke.most commandos had a fitting on the exhaust manifold that a metal tube attached to and ran up to the choke on the carb.

 

The CJs used the same exhaust manifold. If your's is still stock it should have a tube protruding from the underside of the passenger exhaust manifold. I believe they used a hard plastic tube from there to the choke. Other than that you should just need 12V power to it and adjustment.:v6:

 

Just to clarify, there has to be a little vacuum on a thermal or thermoelectric choke. There's a passage to manifold vacuum in the carburetor that lowers the pressure under the choke cover, and that draws the heated air in from the choke stove.

Of course, the 2G could do this differently from every other carb I'm familiar with, but I don't think so.

<edit> Also, the "Help" line sells a thermo/thermoelectric choke stove repair kit, that will provide everything you need to feed hot air to the automatic choke.

 

I think the tubing is shown in this picture.
http://www.earlycj5.com/tech/engines/225/Hubbard/john_hubbard_history.php
Didn't it originally have some type of fabric covering?

 

Most do. Should be glass fiber, or the A-word.

 

Why so Tim? Wouldn't there be enough pressure from the exhaust to force heated air to the choke?

 

No, there's no connection to the exhaust. It uses only outside air. If you look at the choke stove, it's a blind pocket in the manifold.

 

That's what I originally thought but after checking at least two manifolds there is definitely a breach in the tubing inside the manifold, at least with those tested. We had a discussion about plugging the ends of the tubing here before.

 

Doubtful. Every other carb I've seen has a hot air stove, not an exhaust connection. Clean, filtered air. Exhaust gas is corrosive, and sending it into the choke housing seems a very unlikely design choice.

Have you actually seen exhaust gas coming out of this hole, on a running engine? This too seems to me to be a very unlikely design choice - an exhaust leak almost guaranteed.

 

Yes. Again, we talked about this before as others have experienced the same thing.

 

Last time I'll try to contribute something from memory. Just checked a spare manifold and the tube is completely sealed inside. However, the one on my Jeep does leak exhaust gas, which is why I went through the trouble of trying to seal it. Enough of my stupid input for the day.

 

im running heders on my v6, anyone have any other ideas on how i can hook it up?