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Unread 11-18-2010, 05:35 PM   #1
Rambler1
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Spark Plugs Change 2008 Liberty Limited 3.7

Need help trying to locate the spark plugs? Is there individual coils on every plug? How do I go about changing the plugs myself, not completely inexperienced. But I am having a difficult time locating the plugs. Also which type plugs do you guys use. Engine 3.7 with auto trans and towing 5000 lbs. Is there any graphic to look at.
If anyone has any tips / suggestions to make this job easier please let me know.

Thanks In Advance
Rambler1
Delaware

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Unread 11-18-2010, 08:02 PM   #2
Elt31987
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Yup there under the coil pack. Check out http://www.jeepforum.com/forum/f28/change-spark-plugs-02-07-jeep-liberty-kj-1106657/ It looks a little different but is the same engine. Make sure you blow all the dirt and dust off around the spark plug and coil pack because if dirt falls in the socket hole it goes directly into your engine. The factory sparks are pretty darn tight in there. There all easy except the rear pass side one, youll need a universal elbow to get the socket in there. Plugs i put in are the originals that came with it. http://www.amazon.com/gp/product/B000GZGV3E/ref=oss_product. Theres no point in putting those so called high performance plugs since the engine will not benefit from them, just my opinion. Just put in NGK ZFR6F-11G 6987 Plugs.
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Unread 11-19-2010, 11:44 AM   #3
enrico1
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what do you think about the NGK ZFR6FIX-11 6411 IRIDIUM 1X PLUGS.?
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Unread 11-19-2010, 02:21 PM   #4
Elt31987
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I would just stick with the ones that came with the engine.
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2008 KK Liberty
Inferno Red
Daystar 2" Spacer Lift With SkyJacker Hydro Shocks
JBA Gen 5.5 Upper Control Arms
Rokmen Riddler 8.25 Differential Cover
2 KC Slimlite 100 Watt Driving Lights on JK Light Bar
245/75/16 All Terrains
Mopar Front Tow Hooks
Mopar Rear Tow Hook
Mopar Skids
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Unread 11-20-2010, 06:29 AM   #5
VMF
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what he said i also went with the original ones, no point in wasting money on high performance ones. and imho u want ur car reliable, not fast, especially when it comes to jeeps
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Unread 11-20-2010, 03:26 PM   #6
SuperRliBerty
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ELT, In that video, the battery was not disconnected, I always disconnect the battery before do any electrical maintenance on a vehicle.
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Unread 11-21-2010, 08:05 AM   #7
VMF
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no need to disconnect the battery as long as u dont keep the ignition on or dont start the car it should b ok when it comes to changing spark plugs. disconnecting the battery will erase all the ECU data about ur drving and put it into learning mode.
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Unread 04-24-2011, 06:51 PM   #8
seahawk190
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2009 Spark Plug Replace question

.

Last edited by seahawk190; 04-30-2011 at 11:49 AM..
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Unread 04-25-2011, 06:43 PM   #9
SuperRliBerty
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Quote:
Originally Posted by VMF View Post
no need to disconnect the battery as long as u dont keep the ignition on or dont start the car it should b ok when it comes to changing spark plugs. disconnecting the battery will erase all the ECU data about ur drving and put it into learning mode.
At each oil change or any electrical work on my j-lib, I disconnect the battery with my installed battery quick disconnect.

I have NO ELECTRICAL GLITCHES, NO COOLING PROBLEM AND NO IDLING ISSUES!
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Hood Prop mod. Battery Quick Release mod.
Resonator removed (sounds like a V8 on start up)
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Unread 04-26-2011, 07:08 PM   #10
jsburton84
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I just changed my plugs today for the $2.99 auto-lite platinum plugs from auto zone. Nothing fancy, just regular single electrode. The engine starts and idles much smoother and quieter now. I think someone else on here recommended those before. I am definitely liking the improvement.
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