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Old 01-22-2011, 12:33 PM
Thread Starter
Join Date: Jan 2011
Location: The Desert
Posts: 5
Noob Wants Advice

Hi all, I am just about to buy my first wrangler. I come from the world of Toyota 4x4s, but as mine is currently smashed up I need to something to drive. I am torn between just buying any old $1000 rig and trying out a more permanent solution in a Wrangler. I have only a couple days to decide!

To get right to the point, I am looking at three different YJs. However, I don't know anything about the 4.2 engine. I've worked on the 4.0 I6 engine and I like it, but don't even know what to look for in a 4.2. I realize the following questions are super nooby but I don't have the time to find out everything I need this morning. Hopefully you all can serve up some hot summaries!

First question, what are the most important issues to look for in the 4.2?

Second question, in a nutshell, what are the top 5 problems I should look for in the YJ?

Third and tangential question, what about MPG? The stupid government sites say 20 mpg/highway for a manual and 15 mpg/highway for an auto? I would be getting a manual, but is the difference between those numbers really true? The 4.0 I've worked on is buttoned to a A/T and gets horrible gas mileage.



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Old 01-22-2011, 12:45 PM   #2
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Location: Murfreesboro
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Top issue I know of in the 4.2 is the cater carb.. its junk.. Will never idle right..
The 4.2 isnt full of power.. to me 33s would be about the max size of tire to run on it too..
Any bigger then you better re-gear

Be safe or die trying...
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Old 01-22-2011, 12:49 PM
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Join Date: Jan 2011
Location: The Desert
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Thanks! I wondered about its power-isn't it something like 112hp? I doubt I would be putting on tires over 33" though.

I assume the carb is something discussed on the forum and a part I can easily replace with a different make(?). That's one thing that attracts me to Jeeps, the crazy amount of aftermarket parts!

I won't be turning this into a total rock-crawler, just using it to travel about 200 freeway miles a week and to get up 4x4 trails to go hiking and camping.
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Old 01-22-2011, 01:00 PM   #4
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If time is of the essence here, try posting your questions in the YJ section of the Forum. You will get plenty of replies there (not as many members check out the check-in thread). There are tons of YJ owners here who will be happy to help you out.
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Old 01-22-2011, 01:06 PM
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Will do! And, thanks for the welcome, seems like a quality forum .
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Old 01-22-2011, 02:46 PM   #6
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Welcome! Sorry I can't help with the tech questions, but PLENTY of people on here can
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Old 01-23-2011, 09:28 AM   #7
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I can only please one person a day and today is not your day and tomorrow is not looking good either!

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Old 01-23-2011, 09:44 AM   #8
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Location: Romney WV
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I have the 4.2 and run 33's with no problem. It has plenty of power for me, and I haven't had any problems with it since I put the new motor in.
But goodluck on your search.

No longer a jeeper, BUT I will return!
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