model 1940 1bbl carb

hickorystang

Well-known member
does anyone happen to have one of these on their inline 6? If so, could you send me pictures of how the throttle body links to the diaphragm?

Or better yet, could you send closeup pictures of all angles of the carb?

I ask because I finally got my taillight situation taken care of and drove her today. Something is definitely not right. There is slow acceleration that I don't remember before I rebuilt the carb (first rebuild by the way).

Any help or suggestions would be appreciated!!!
 
1966_l6":2tvm0sov said:

Thanks Fred. After I posted I tried doing a google search on images instead of the plain ole search and got a ton of pictures.

I think I got in over my head a little rebuilding mine. With the exception of replacing the radiator, rebuilding the carb. was all I did. Now when I drive I get terrible acceleration.

Anybody know where I need to look first?
 
First thing that comes to mind is check line from carb to distributor. If thats leaking, it won't be getting proper signal to advance.
 
Explorer":15dn3y6d said:
First thing that comes to mind is check line from carb to distributor. If thats leaking, it won't be getting proper signal to advance.

Saw no fuel leak from that line.

If you take a look at this link you can see the diaphragm side. the throttle connects on the right side, but when I try to rev the engine under the hood manually I use the lever located on the left side of the picture below the brass filter.

http://s694.photobucket.com/albums/vv30 ... mcover.jpg
 
hickorystang":uz4ygei3 said:
Explorer":uz4ygei3 said:
First thing that comes to mind is check line from carb to distributor. If thats leaking, it won't be getting proper signal to advance.

Saw no fuel leak from that line.

If you take a look at this link you can see the diaphragm side. the throttle connects on the right side, but when I try to rev the engine under the hood manually I use the lever located on the left side of the picture below the brass filter.

http://s694.photobucket.com/albums/vv30 ... mcover.jpg
Not a fuel line. It's a vacuum line. I've never worked on one of these so can't help you with any linkage.
 
Explorer":3o0y7ri8 said:
hickorystang":3o0y7ri8 said:
Explorer":3o0y7ri8 said:
First thing that comes to mind is check line from carb to distributor. If thats leaking, it won't be getting proper signal to advance.

Saw no fuel leak from that line.

If you take a look at this link you can see the diaphragm side. the throttle connects on the right side, but when I try to rev the engine under the hood manually I use the lever located on the left side of the picture below the brass filter.

http://s694.photobucket.com/albums/vv30 ... mcover.jpg
Not a fuel line. It's a vacuum line. I've never worked on one of these so can't help you with any linkage.

You think I may be better off getting an 1100 to replace my 1940 with?
 
You probably have an issue that can be solved, maybe even simple. I've read people completly satisfied with the 1940. The Autolite 1100 was the stock carb installed in 1966 on all but California built vehicles and the 1940 was a service replacement carb. The LOM was a totally vacuum advance distributor, no centrifical advance. This is why I mentioned checking the vacuum line. Without it, you have no advance and will feel a loss of power. I'd take your instructions, check all settings and linkage hookups before I spent the money on a new carb.
 
Explorer":g2ihde4g said:
You probably have an issue that can be solved, maybe even simple. I've read people completly satisfied with the 1940. The Autolite 1100 was the stock carb installed in 1966 on all but California built vehicles and the 1940 was a service replacement carb. The LOM was a totally vacuum advance distributor, no centrifical advance. This is why I mentioned checking the vacuum line. Without it, you have no advance and will feel a loss of power. I'd take your instructions, check all settings and linkage hookups before I spent the money on a new carb.

Checked my accelerator linkage last night and it is good to go with opening the throttle body valve. Excuse my ignorance, but there is just one vacuum line, right? The one that connects the carb and the distributor?
 
An automatic transmission will have one connected to manifold vacuum. Then there is the PCV connection also.
 
Explorer":1jdwiezt said:
An automatic transmission will have one connected to manifold vacuum. Then there is the PCV connection also.
I have the 3 speed automatic. Okay, I will have one to the manifold, a PCV, and one to the distributor...
 
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