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Go Back JeepForum.com > Models > Jeep Grand Cherokee & Commander Forums > Grand Cherokee General Discussion > Split Nail WJ Build Thread

Bds fox ipf 2.0 racing series shocks now available at rockYukon Ultimate 35 axle kit for c/clip axles with Yukon ZipANOTHER Rockridge4wd Creation!! Spare Tire Carrier Delete

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Unread 02-14-2011, 01:38 PM   #826
1stblack97ZJ
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Quote:
Originally Posted by SplitNail View Post
Okay sweet deal. Thanks for all the info. What is a good compression reading on the 4.7l?
No problem man.

Someone else will have to answer that one, I've never owned anything with the 4.7L, but I can check my haynes manual later and find out if no one answers.

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Unread 02-14-2011, 01:50 PM   #827
SplitNail
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Okay no worries. I I'll look around.

Here is the spark plug. Any comments??

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Unread 02-14-2011, 01:53 PM   #828
tsconver
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that plug looks pretty decent.
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Unread 02-14-2011, 01:56 PM   #829
SplitNail
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Should i replace them?
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Unread 02-14-2011, 01:58 PM   #830
tsconver
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4.7 should be using the platinum tip plugs is that a platinum plug, does not look like it, never hurts to replace them.
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Speak softly and carry a big stick.

We have room but for one flag, the American flag . . . We have room but for one language, and that is the English language . . . And we have room for but one sole loyalty...and that is a loyalty to the American people. T. Roosevelt 1919

2003 Grand Cherokee 4.0L Laredo

My Build Thread

A few goodies
http://s257.photobucket.com/albums/h...umb55839/jeep/

2001 Kawasaki 1200 ZRX
A few Speed parts, fun to ride
http://www.zrxoa.org/

2006 Red Liberty
Wife's ride, pretty stock
http://i257.photobucket.com/albums/h...mage0008-1.jpg

http://www.cnc4x4.org/

http://www.treadlightly.org/

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Unread 02-14-2011, 01:59 PM   #831
SplitNail
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Quote:
Originally Posted by tsconver
4.7 should be using the platinum tip plugs is that a platinum plug, does not look like it, never hurts to replace them.
I have always heard use the champion copper cores...
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1999 WJ 4.7L V8, 242 TC, Front Aussie Locker, 4 Inch RC X-Series lift, 17x8 w/ 4.5BS Black Rock Vipers, 285/70/R17 BFG KM2's, All AMSOIL Synthetic Fluids

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Unread 02-14-2011, 02:02 PM   #832
1stblack97ZJ
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No oil deposits on the plug, thats good. Looks just like normal wear. Do you know how many miles are on them?
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Unread 02-14-2011, 02:03 PM   #833
SplitNail
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Quote:
Originally Posted by 1stblack97ZJ
No oil deposits on the plug, thats good. Looks just like normal wear. Do you know how many miles are on them?
20k. I'm gunna go ahead and replace them. Just cause. Where could the oil be going then?

That's also just on cylinder. We will see what happens.
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Unread 02-14-2011, 02:08 PM   #834
1stblack97ZJ
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Yep, check all the cylinders and see if there is oil on any of them, and yeah, I would replace them just cause too lol
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Unread 02-14-2011, 02:21 PM   #835
SplitNail
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Quote:
Originally Posted by 1stblack97ZJ
Yep, check all the cylinders and see if there is oil on any of them, and yeah, I would replace them just cause too lol
Okay, I got new plugs. About to see what the compression is. In scared.
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Unread 02-14-2011, 03:59 PM   #836
SplitNail
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Compression isn't looking good.

1-100
2-125
3-80
4-125
5-115
6-125
7-125
8-87

This is starting on the passenger front and going clock wise and ending front driver side.
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1999 WJ 4.7L V8, 242 TC, Front Aussie Locker, 4 Inch RC X-Series lift, 17x8 w/ 4.5BS Black Rock Vipers, 285/70/R17 BFG KM2's, All AMSOIL Synthetic Fluids

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Unread 02-14-2011, 04:43 PM   #837
snobrdrkid07
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Ah man that sucks...
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Unread 02-14-2011, 04:46 PM   #838
SplitNail
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Quote:
Originally Posted by snobrdrkid07
Ah man that sucks...
Yea, I'm gunna go grab a can of restore and see if that helps.
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Unread 02-14-2011, 06:09 PM   #839
1stblack97ZJ
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Did you find out what the compression is supposed to be?
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Unread 02-14-2011, 06:40 PM   #840
SplitNail
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140-180.... I'm way off.
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