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Originally Posted by wrigley123
Hello,
Let me start by saying I just purchased my first jeep ever. I have roughly 1300 miles on it. It is a 2006 Wrangler Unlimited 4.0L automatic.
1) I realize the gas milege is not the greatest, but I haven't even gotten 15 miles to the gallon on average yet. I drive about 60/40 in town to highway. Will this improve? Is there a break-in period for these motors?
2) I also noticed that the idle is rough. The tach registers about 500 RPM at idle. That seems kind of low to me.
3) I have oil that leaks on to the top of valve cover. It is coming from around the rubber seal on the air line that runs from the air filter box to the valve cover.
Any help or suggestions is appreciated. Again, bear in mind that some of this stuff may be second nature to most of you, but it's all new to me  Thanks
Mike
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Well, I have one suggestion that may make all your problems go away. Take it to the dealer and use that DC warranty. It is practiacally a new Jeep and it is under warranty. I would not even bother wasting time to diagnose it, just make an appointment and take it in. It will not cost you a penny and you will be happy you did when they fix it.
Oh, don't expect too much more than that in the MPG category...
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2004 Jeep Wrangler Rubicon (Modified a lil' bit)
2003 Honda VFR 800 (All stock w/ABS, just like Honda built it)
2001 Ford Crown Victoria Police Interceptor (It looks like a cop car because it is one)