1990 YJ 4.2 with carb problems - Jeep Wrangler Forum

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Old 10-29-2009, 07:12 PM   #1
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1990 YJ 4.2 with carb problems

Carburator seems to act up frequently as the motor sat for three years prior to the install. What does everyone recommend.... rebuild kit or a better alternative. Is this a common mount for various brands ? I really wanted to avoid buying a three hundred dollar replacement if at all possible. Thanks
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Old 10-29-2009, 08:49 PM   #2
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you could try a rebuild kit, but if it doesn't work then you wasted time and money only to have to get a new carb. you could also get a master craft carb. a lot of guy do that swap and are very pleased with the results.

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Old 10-29-2009, 11:21 PM   #3
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either rebuild or use the motorcrat carb off of a f150 if u have the cash the weber is good to
some say why i say
its a jeep thing u wouldn't understand
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Old 10-30-2009, 12:57 AM   #4
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Easy to rebuild. Kit is only about 25 bucks. If you don't want to buy a new one cheap way to go. Also after you rebuild it do the nutter bypass.
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Old 10-30-2009, 01:16 AM   #5
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Old 10-30-2009, 09:36 AM   #6
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Thats interesting... a two barrel ford f-150 carb will work. Any particular series or years ? Never had alot of luck with kits. Seems the moving parts have too much play and it never runs the same. Thanks for the info.
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Old 10-30-2009, 07:22 PM   #7
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With the 4.2 and carb you can also do the team rush tune up.There is thread on this forum. I highly RECCOMMEND IT
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Old 11-13-2009, 11:38 AM   #8
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With the ford carb I assume one needs a base adaptor. Where might this be located or called ? Is there such a thing as a simple edelbrock 2 barrell that would be a bolt on ? All a guy would want is a manual choke, air and fuel mixture adjustments. Mine looks like a rubber hose maze with electrical connections going no where. Its for off road so I wouldn't be looking to get it emission tested.
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Old 11-13-2009, 02:06 PM   #9
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You've got the computer feed-back carb. Those are a pain to get running right The best thing to do is smash it with a really big hammer. I put an older Carter off of a CJ on mine. I really wanted to do the Motorcraft 2100 series carb on it. There is a guy on Ebay that sells a ton of these. He completely rebuilds them & includes the adpter plate & all neccessary bits & pieces to make it work. It is a very complete kit with great tech support. He even includes his home phone number if you have any questions. They sell for about $300. I will try this when my Carter finely takes a dump on me. Just do a search for Motorcraft 2100 carb Jeep. It ought to bring it up

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