Dry radiator but full reservoir - Page 3 - JeepForum.com
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post #31 of 42 Old 12-03-2015, 12:16 PM Thread Starter
DesertLight
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Originally Posted by Jeepsr4me View Post
he was told just what you said in post 14..... by me... not heard back on all of it yet...
Yeah I'm trying to work out transportation and classes. So I gotta get some free time to go work on the YJ.

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post #32 of 42 Old 12-05-2015, 10:47 AM Thread Starter
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Alright guys pulled plugs, I wish I could have done a cylinder leak down test but I don't have a compressor so I just did a cylinder compression test.

A friend brought over his compression and leak kit and we did as followed.

Pulled all my spark plugs and disconnected the injectors and here are my results. (Tomorrow I will be doing them again, but with a dash of oil in each cylinder to check rings.)
Cylinder 1: 115
Cylinder 2: 95
Cylinder 3: 110
Cylinder 4: 110
Cylinder 5: 110
Cylinder 6: 115

Also took some pictures of my spark plugs, what do you guys make of this?
Attached Thumbnails
Capped sparks 1-3.jpg   Capped sparks 4-6.jpg  
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post #33 of 42 Old 12-05-2015, 10:51 AM Thread Starter
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Cylinder 1: 115
Cylinder 2: 95
Cylinder 3: 110
Cylinder 4: 110
Cylinder 5: 110
Cylinder 6: 115
Also test was done on a cold engine about 23 degrees out today. I have not ran it for the past few days.
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post #34 of 42 Old 12-05-2015, 11:26 AM
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I suggest installing champion copper plugs. jeep engines do not like platinum plugs.

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post #35 of 42 Old 12-05-2015, 02:13 PM Thread Starter
DesertLight
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I suggest installing champion copper plugs. jeep engines do not like platinum plugs.
Huh I wonder why that is. Is there any benefit from using the Bosch Iridiums or Coppers, or the Champion Coppers?
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post #36 of 42 Old 12-05-2015, 03:21 PM
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Quote:
Originally Posted by DesertLight
Huh I wonder why that is. Is there any benefit from using the Bosch Iridiums or Coppers, or the Champion Coppers?
Platinums and iridium are designed for modern engines with hi compression and direct injection with 100k mile service intervals. Where a 4.0/4.2/2.5 are old tractor engines. A copper burns hotter and works better in our old jeeps. Copper champions are the goto plugs

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post #37 of 42 Old 12-05-2015, 03:38 PM Thread Starter
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Originally Posted by Tom95YJ View Post
Platinums and iridium are designed for modern engines with hi compression and direct injection with 100k mile service intervals. Where a 4.0/4.2/2.5 are old tractor engines. A copper burns hotter and works better in our old jeeps. Copper champions are the goto plugs
Sounds good, I will definitely buy those up and put them in my YJ and XJ. Along with some new wires since my are well... toast.
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post #38 of 42 Old 12-05-2015, 03:45 PM
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Quote:
Originally Posted by DesertLight
Sounds good, I will definitely buy those up and put them in my YJ and XJ. Along with some new wires since my are well... toast.
you'll notice a change in performance. I also suggest using wires for a 85 f150 with 4.9l They are the same length and 8mm vs the jeeps 7mm

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post #39 of 42 Old 12-05-2015, 03:54 PM Thread Starter
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you'll notice a change in performance. I also suggest using wires for a 85 f150 with 4.9l They are the same length and 8mm vs the jeeps 7mm
Yeah my list of stuff for my jeep is getting longer lets hope I can shorten it soon with Christmas.
  • Radiator
  • Plugs
  • Wires
  • Belt & pulley
  • Water Pump
  • T-Stat
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post #40 of 42 Old 12-06-2015, 10:26 AM
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Yeah as is the plugs read as burning oil on 2... OR you posted the same pic twice and just put the numbers in,...


Cause both pics show the plugs 1-3 and 4-6 all in the EXACT orientation and position...
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post #41 of 42 Old 12-06-2015, 11:59 AM Thread Starter
DesertLight
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Originally Posted by Jeepsr4me View Post
Yeah as is the plugs read as burning oil on 2... OR you posted the same pic twice and just put the numbers in,...


Cause both pics show the plugs 1-3 and 4-6 all in the EXACT orientation and position...
Sorry about that, must have accidentally overwritten my save when I was in a hurry. Heres the proper one.
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Capped sparks 4-6.jpg  
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post #42 of 42 Old 12-07-2015, 06:52 PM Thread Starter
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So we didn't find any coolant on the sparks or on/in the immediate area inside the cylinder with the pinky test. Anyhow I have a rad, waterpump, t-stat, gaskets, and hoses ordered, should be here Wednesday.
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coolant , heater , radiator , reservoir , temp

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