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-   -   Engine wont run off full choke (http://gnttype.org/forums/showthread.php?t=14515)

jjurva 08-02-2011 09:04 PM

Engine wont run off full choke
 
Hi, I have a 1962 buick v6 198 in a willys cj2a. The engine won't run if not fully choked and also puts out quite a bit of smoke. It has a Rochester 2 jet on it. Any help about any solutions would be greatly appreciated.

charlief1 08-02-2011 09:32 PM

Re: Engine wont run off full choke
 
Either you've got a massive vacuum leak or n issue with the carb and it needs to be rebuilt.

jjurva 08-02-2011 09:41 PM

Re: Engine wont run off full choke
 
How do i check for vaccum leak?

Keller 08-02-2011 10:07 PM

Re: Engine wont run off full choke
 
Well, you could just use your hands and ear and search for it...

Or, take a propane torch, let the gas flow but don't light it, and pass the nozzle around anywhere there might be leaks. If you hear the engine suddelnly change its tone and RPMs, you have found the leak.

Keller 08-02-2011 10:08 PM

Re: Engine wont run off full choke
 
What color is the smoke?

Keller 08-02-2011 11:51 PM

Re: Engine wont run off full choke
 
http://www.youtube.com/watch?v=YH6306zM-Ug&NR=1

charlief1 08-03-2011 12:00 AM

Re: Engine wont run off full choke
 
Quote:

Originally Posted by Keller (Post 59469)
Well, you could just use your hands and ear and search for it...

Or, take a propane torch, let the gas flow but don't light it, and pass the nozzle around anywhere there might be leaks. If you hear the engine suddelnly change its tone and RPMs, you have found the leak.

I prefer a can of carb cleaner or brake cleaner Scott.:winkgrin: Put the tube on it and then spray different things until the idle goes up or smoothes out.:pat:

jjurva 08-03-2011 12:34 AM

Re: Engine wont run off full choke
 
Thanks, this should help and the smoke is white. Also Ive been told using propane can be a bad idea. Will it hurt my engine?

Keller 08-03-2011 02:19 AM

Re: Engine wont run off full choke
 
IMHO propane fine. It will not ignite, especially in free air and such a small amount.

White smoke indicates burning coolant. I would suggest doing a compression test as well.


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