Reviving a 1990 Sahara YJ :D - Page 4 - JeepForum.com

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post #46 of 91 Old 10-13-2013, 11:49 AM
laybackman
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Originally Posted by Meepz View Post
Yep, new fuel. Also, I don't have the filter attached to the carb at the moment. Does that make much difference?



I'll try that, thanks.
I would NEVER run a fuel line from an old gas tank into a carb!! One spec of crud gets into the carb and that spec of crap will drive you nuts.

Just for the heck of it tap the side of the carb a few times with the butt end of a screwdriver handle. Your floats may be stuck closed so you are not getting any fuel.

And all carbs need to be adjusted when installed


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post #47 of 91 Old 10-13-2013, 02:50 PM
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I still say it's fuel related.
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post #48 of 91 Old 10-13-2013, 03:17 PM Thread Starter
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I still say it's fuel related.
It stays running with the carb choke open. Once closed, it dies. Is that a symptom of a fuel problem?
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post #49 of 91 Old 10-13-2013, 03:27 PM
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It stays running with the carb choke open. Once closed, it dies. Is that a symptom of a fuel problem?
It is supposed to run with the choke in the (mostly) open position.

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post #50 of 91 Old 10-13-2013, 03:30 PM Thread Starter
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It is supposed to run with the choke in the (mostly) open position.
I see. But after pressing the gas, it closes and dies.
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post #51 of 91 Old 10-13-2013, 03:33 PM
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Read post #43 there is no magical wand to wave over this carb you have to check all the settings.

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post #52 of 91 Old 10-13-2013, 03:37 PM
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Youtube; carter bbd adjustments 1 example of the info there


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Senators and Congressman should wear uniforms like NASCAR drivers so we could identify their corporate sponsors....
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post #53 of 91 Old 10-13-2013, 08:17 PM Thread Starter
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Youtube; carter bbd adjustments 1 example of the info there

Video Link: http://www.youtube.com/watch?v=XFGf1kXlnLs
When he revved it, the choke stayed open. When I rev mine, it closes.

Edit: Watched his other carb video and the choke only closed a tab bit after revving it. Mine closes all the way and dies. Also, I noticed his opens up slowly. Mine does not. Not sure if this is helpful info or not.
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post #54 of 91 Old 10-13-2013, 08:26 PM
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When he revved it, the choke stayed open. When I rev mine, it closes.
Isn't your choke pull of vacuum operated? Check that their is vacuum and that the pull off works when you apply vacuum.

There are a bunch more videos available on Youtube. Like I stated earlier you need to start at the beginning with the carburetor adjustments.

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post #55 of 91 Old 10-13-2013, 08:31 PM Thread Starter
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Originally Posted by laybackman View Post

Isn't your choke pull of vacuum operated? Check that their is vacuum and that the pull off works when you apply vacuum.

There are a bunch more videos available on Youtube. Like I stated earlier you need to start at the beginning with the carburetor adjustments.
I'll start a new headache in the morning and try it out. :P
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post #56 of 91 Old 10-14-2013, 01:46 PM
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Mades it run out of air when the choke closes which is why it's stalling out. Somethings not right with that choke.
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post #57 of 91 Old 10-14-2013, 02:14 PM Thread Starter
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Mades it run out of air when the choke closes which is why it's stalling out. Somethings not right with that choke.
Agreed.


Quote:
Originally Posted by laybackman View Post
Post #7 might help you before you swap out the carb.

http://www.jeepforum.com/forum/f8/ca...ttings-929120/
How can I tune the carb with a vacuum gauge if the jeep doesn't run?
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post #58 of 91 Old 10-14-2013, 02:30 PM
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Agreed.




How can I tune the carb with a vacuum gauge if the jeep doesn't run?
Someone probably messed with the fuel and air adjusting screws. You have to start at a certain point and work from there. Re-read what I posted earlier the thread I found here in JF telling you how to do that. In most cases to fine tune the carb a vacuum gauge is used.


Again....post #7

http://www.jeepforum.com/forum/f8/ca...ttings-929120/

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Senators and Congressman should wear uniforms like NASCAR drivers so we could identify their corporate sponsors....
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post #59 of 91 Old 10-14-2013, 02:59 PM Thread Starter
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Originally Posted by laybackman View Post
Someone probably messed with the fuel and air adjusting screws. You have to start at a certain point and work from there. Re-read what I posted earlier the thread I found here in JF telling you how to do that. In most cases to fine tune the carb a vacuum gauge is used.


Again....post #7

http://www.jeepforum.com/forum/f8/ca...ttings-929120/
Guess I'll go out and get a vacuum gauge.
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post #60 of 91 Old 10-14-2013, 05:53 PM
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To me it sounds like your choke thermostat isn't working or the vacuum isn't connected right or maybe even a vacuum leak
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