Help with '89 4.2L Vacuum Hoses -
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post #1 of 6 Old 05-09-2013, 09:13 AM Thread Starter
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1989 YJ Wrangler 
Join Date: May 2013
Location: Middleton
Posts: 3
Help with '89 4.2L Vacuum Hoses

I am having trouble getting my '89 YJ 4.2L started. At one point I had very few problems, and then they became intermittent and now I can't ever get the YJ started. There are two disconnected vacuum hoses that I am not sure where they go. I have looked at various diagrams but not found the correct spot.
I have adjusted the screw on the front of the carb, which previously helped a lot.
I have cleaned the carb, which also previously helped.

I am convinced that I should switch to a Weber Carb, but I am not sure if switch the carb will completely work, or if I should have someone look over the current system first?
Does anyone have any advice?
Any mechanic suggestions for the Madison, WI area?

Thank You!

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post #2 of 6 Old 05-09-2013, 10:47 AM
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1990 YJ Wrangler 
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Location: st. louis
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post on the YJ tech board with a lot more details.
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post #3 of 6 Old 05-09-2013, 05:12 PM
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1989 XJ Cherokee 
Join Date: Nov 2011
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Can you post a picture of them? Where they come from? I could go and take a picture of my 87 and see if that helps. They may go where the ones on mine go.
Let me know
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post #4 of 6 Old 05-21-2013, 01:10 PM Thread Starter
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1989 YJ Wrangler 
Join Date: May 2013
Location: Middleton
Posts: 3
I appreciate your feedback but, I think I figured it out. Although I think I am still going to use a weber carb, my jeep is running.
I did increase the idle which does seem to help, but I think maybe part of the problem is a leaky jet that can flood the carb depending on how I park.
Thank you again
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post #5 of 6 Old 05-22-2013, 11:56 AM
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2012 JK Wrangler 
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Location: Henderson
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Does your carb have the “stepper motor”, if so that just might be your problem? It is common for those to go bad and will give you the problems you are describing.
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post #6 of 6 Old 05-23-2013, 08:09 AM
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1989 YJ Wrangler 
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The stock carb is not great, but the Jeep should run reasonably well if all is set up properly.
The Weber is better but not a cure all.
I converted to FI and have a bunch of parts. Pm me if you need something.

My toys
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