'95 Grand Cherokee - changing spark plugs - JeepForum.com

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post #1 of 18 Old 03-10-2004, 02:22 PM Thread Starter
jeep95
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'95 Grand Cherokee - changing spark plugs

Hi. I'm new to the jeep family and encountered a problem when I tried to change the spark plugs on the jeep. There are metal shields around each of the plugs and wire boot. They wouldn't come off easily and I ended up bending them and now can't get them back on. First, what is their purpose and next should I run the engine without them or replace them?

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post #2 of 18 Old 03-10-2004, 05:10 PM
Rjwrangler
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Quote:
Originally Posted by jeep95
Hi. I'm new to the jeep family and encountered a problem when I tried to change the spark plugs on the jeep. There are metal shields around each of the plugs and wire boot. They wouldn't come off easily and I ended up bending them and now can't get them back on. First, what is their purpose and next should I run the engine without them or replace them?
My 98 Dodge had those on it. The only thing I could tell they did for sure was to hold lots of dirt and debris aroung the plug! I took them all off and never replaced them. There were no ill effects by doing so!

I should also mention that I switched wires to Accel 8.5 MM which are impervious to most engine harshes.

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Last edited by Rjwrangler; 03-11-2004 at 06:57 AM.
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post #3 of 18 Old 03-10-2004, 05:37 PM
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These are heat sheilds. They protect the wires from the exhaust manafold temperatures. They should not be permanently removed, because extend the life of the wires.

Cheers Steve

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post #4 of 18 Old 06-09-2006, 09:49 PM
lma1973
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I just bought a 84 GC limuted V8. I want to change my plugs, but i too noticed the metal shields. Do they just pull off? Are they easy to put back on?
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post #5 of 18 Old 06-09-2006, 09:57 PM
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I just did a tuneup on my 93 ZJ 5.2. The shields/sleeves (or sparkplug fouler?) got in the way but with right extension and sockets I changed them all. Try the cap and rotor!!

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post #6 of 18 Old 06-09-2006, 10:01 PM
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So you dont have to take them off? The spark plug wrench will fit in between them to get to the pluig? cool. What size plug wrench or socket does it take to get them out?

Thanks

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post #7 of 18 Old 06-09-2006, 10:14 PM
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Quote:
Originally Posted by lma1973
I just bought a 84 GC limuted V8.
You really have an 84 Grand huh? I'd LOVE to see that.

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post #8 of 18 Old 06-09-2006, 10:21 PM
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LOL...i got one of the prototypes...thats why **** is always breaking!!

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post #9 of 18 Old 06-09-2006, 10:29 PM
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I almost positive it was 5/8's. As far as extensions I used all of them including my wobble bars to get at each one. I also used the socket that looks like a differential( don't laugh i feel stupid enough cause i don't remember what its called.... ok laugh)

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post #10 of 18 Old 06-09-2006, 10:33 PM
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LOL...i know what you're talking about. Thanks for the info!

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post #11 of 18 Old 06-09-2006, 11:53 PM
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Wow - I didn't even think of taking them off, but I did pull the wires and then blow out all the crap that had fallen in them with an air compressor before removing the plugs. The shields didn't get in the way, actually helped line things up when installing the new plugs.
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post #12 of 18 Old 06-10-2006, 12:10 AM
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Quote:
Originally Posted by nbjly
The shields didn't get in the way, actually helped line things up when installing the new plugs.
Same here. Mine are still there, never thought of them as an inconvenience.

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post #13 of 18 Old 06-10-2006, 07:14 PM
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an easy way to bypass them is to take a small pair of pliers (such s needle nose) and grab ahold of the wires to pull them off, then to put plugs back in take a small piece of rubber tubing about 3 or 4 inches long that fits snugly on the top of the plug, get it started then finish it off with socket
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post #14 of 18 Old 06-11-2006, 05:56 AM
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Quote:
Originally Posted by jeepdude06
... then to put plugs back in take a small piece of rubber tubing about 3 or 4 inches long that fits snugly on the top of the plug, get it started then finish it off with socket
Dude - that is so MacGyver!

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post #15 of 18 Old 06-11-2006, 11:37 PM
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i no, my 72 year old boss showed me it, it works a hell of a lot better, ive used it to replace the plugs in big V8 trucks where u have to manuever your hand around about 30 vaccum hoses, wires, and everything else
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