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ANOTHER Rockridge4wd Creation!! Spare Tire Carrier Delete The Original 3/8" Ruffstuff Diff Cover!Even Better Heim Pricing! From Ruffstuff

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Unread 12-18-2013, 06:32 AM   #46
MWF
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2002 WJ 
 
Join Date: Nov 2007
Location: UK
Posts: 465
Quote:
Originally Posted by MTB04WJ View Post
Really bro? It's hilarious the guys from over the pond have so much useful info.
Sorry couldn't resist.

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Unread 12-18-2013, 08:58 AM   #47
Turbozcs2003
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2002 WJ 
 
Join Date: Feb 2010
Location: NE
Posts: 298
Not sure what maintenance your WJ has scene, but as mentioned, good set of new plugs( I run the stock champs), clean TB, fuel filter, air fitler, PCV Valve etc are not bad investments if they have not been done in a while.

Poor city gas mileage is tough to diagnose, what does it get on a pure highway run for a couple hours, hand calc it? You should see 18sh with the crappy winter gas.

Other potential things are tired O2 sensors and coolant sensor, maybe yours is running rich.
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Unread 12-18-2013, 09:46 AM   #48
wjidaho
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1999 WJ 
 
Join Date: Mar 2013
Location: boise, id
Posts: 2,095
Winter gas sucks mine is down to 13.2 in town and I have my little 4.0 tuned up and up to date, with that said come summer it will be back to 15.3, with all of that said, I am fine with that my old rig was a Toyota that ended up with a v8 conversion, I was lucky to see 13 in the summer (heavy foot and all) as far as has prices here in America we do pay the lowest, I can't believe how expensive it is over the pond, feel for you guys. I do how ever wish I was able to get the diesel motor here, it's more expensive but for my build I would love to get that type of fuel mpg, it would extend my exploring
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Unread 12-18-2013, 05:28 PM   #49
MTB04WJ
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2003 WJ 
 
Join Date: Oct 2013
Location: Pikeville, NC
Posts: 70
Quote:
Originally Posted by Turbozcs2003 View Post
Not sure what maintenance your WJ has scene, but as mentioned, good set of new plugs( I run the stock champs), clean TB, fuel filter, air fitler, PCV Valve etc are not bad investments if they have not been done in a while.

Poor city gas mileage is tough to diagnose, what does it get on a pure highway run for a couple hours, hand calc it? You should see 18sh with the crappy winter gas.

Other potential things are tired O2 sensors and coolant sensor, maybe yours is running rich.
I think it's been well maintained but I would like to go through it sometime soon for a good tune up with all fluids etc. At least then I'll know for sure how everything looks.

I've never done a hand calculation for highway. It's my daily driver to work and back. It only sees the highway for a few miles here and there. I work in the city but live in the country. It's about a 13 mile trip to work. I guess I'm pretty close to average for what it is and how it's set up. For some crazy reason I guess I magically thought it would get better gas mileage. LOL!
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Unread 12-18-2013, 05:30 PM   #50
MTB04WJ
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2003 WJ 
 
Join Date: Oct 2013
Location: Pikeville, NC
Posts: 70
Quote:
Originally Posted by wjidaho View Post
Winter gas sucks mine is down to 13.2 in town and I have my little 4.0 tuned up and up to date, with that said come summer it will be back to 15.3, with all of that said, I am fine with that my old rig was a Toyota that ended up with a v8 conversion, I was lucky to see 13 in the summer (heavy foot and all) as far as has prices here in America we do pay the lowest, I can't believe how expensive it is over the pond, feel for you guys. I do how ever wish I was able to get the diesel motor here, it's more expensive but for my build I would love to get that type of fuel mpg, it would extend my exploring
The diesel would be awesome! I'd be all over that. I could smell diesel exhaust all day and love the sound and power.
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Unread 12-18-2013, 10:26 PM   #51
wjjeep19
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2002 WJ 
 
Join Date: Aug 2012
Location: Chambersburg, Pennsylvania
Posts: 258
The diesel does sound like a good option. My friend recently swapped a Cummins 4BT in his LJ and it is a champ.
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Unread 12-19-2013, 02:43 AM   #52
MadderThanMax
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2001  
 
Join Date: Oct 2011
Location: Glasgow, Scotland
Posts: 1,834
Quote:
Originally Posted by MTB04WJ View Post
I think it's been well maintained but I would like to go through it sometime soon for a good tune up with all fluids etc. At least then I'll know for sure how everything looks.

I've never done a hand calculation for highway. It's my daily driver to work and back. It only sees the highway for a few miles here and there. I work in the city but live in the country. It's about a 13 mile trip to work. I guess I'm pretty close to average for what it is and how it's set up. For some crazy reason I guess I magically thought it would get better gas mileage. LOL!
Ahhhh... Now we're getting the truth....Then the Jeep is the wrong car for the job.. the engine is barely heated up, and if you consider you American like your CATS and anti smog devices then this type of run is going to be more detrimental to the car than a good long blast on the free way. If you consider that it takes at least 30 miles to charge the battery then everythings lifespan will be dramatically shortened and your CATS won't have the chance to heat up, the engine will not be at its most efficient so yes, expect a low mileage return....
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Unread 12-19-2013, 03:02 AM   #53
sbsshadow
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2001 WJ 
 
Join Date: Dec 2013
Location: Hertfordshire, England
Posts: 46
Im in the UK , its not the most expensive but pretty close, but looking at this I think we all need to live in Venezuela lolol !
petrol.jpg  
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Unread 12-19-2013, 03:59 AM   #54
Thomahawk
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2004 WJ 
 
Join Date: Mar 2011
Location: Oslo, Norway
Posts: 7,424
Norway aint on That list, 10.22USD pr gallon yesterday.
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Unread 12-19-2013, 04:06 AM   #55
xrunndonex
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1994 ZJ 
 
Join Date: Dec 2012
Location: coffeyville, Kansas
Posts: 1,796
Quote:
Originally Posted by MTB04WJ View Post

I'd be fine putting a new fuel filter on it but 8 new injectors sound like too much when the girl runs so smooth.

You ever check yours?
There are ways to clean them just Google it one I watched was some guy with a civic showing you its really easy
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Unread 12-19-2013, 04:14 AM   #56
xrunndonex
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1994 ZJ 
 
Join Date: Dec 2012
Location: coffeyville, Kansas
Posts: 1,796
Speaking of tires are they inflated properly? Not the xxpsi on the tire but the one that's selected specifically for your vehicle? They have a calculator on toyo I think that'd tell you what psi to run for even wear it'd in return help your mpgs
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