Tried to do Spark Plugs today in the 4.7--Didn't happend - JeepForum.com

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post #1 of 44 Old 06-12-2004, 12:38 PM Thread Starter
Astorm
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Angry Tried to do Spark Plugs today in the 4.7--Didn't happend

After reading up on it, looking on WJjeeps.com, and buying the plugs, started to do the job today. I took the intake off, etc... Unbolted one of the coils, took off the harness, and the damn thing wouldn't come off!!! I tried another one, and they are all the same, I pulled, jiggled, twisted (which is very limited by the stud, yet to no avail. None of the coils will come off!!!

This is probably one of the most frustrating things since I can't even do spark plugs anymore. I don't want to bring it to the dealer, but I do have a coupon for $62.95 for plug replacement.

I'd rather do this job myself, as opposed to someone else doing it.

Does anyone have any ideas how to get the coils off (without breaking them)?


Thanks,

Andy


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post #2 of 44 Old 06-12-2004, 01:34 PM
10achik
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Take the bolts off and pull like hell

seriously, you have to press down slightly and turn to unseat...then pull really really hard straight up!

Ken

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Last edited by i0achik; 06-12-2004 at 01:49 PM.
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post #3 of 44 Old 06-13-2004, 10:50 AM
ethan1321
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I just did the plugs in my wife's jeep and ran into the same problem. I just took a flat bladed screw driver and placed it between the coil mounting flange and the bottom nut of the stud then just twisted the screw driver. They all popped of like a charm then, this is after I spent about 2 hours just working on the first two. Good luck.

Ethan
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post #4 of 44 Old 06-13-2004, 12:17 PM
10achik
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Come to think about it I did the same thing with a pry bar, they will come out, it just takes some force.

Ken

99 GC Limited - 4.7L HO V8, 6.5" IRO HC LA lift, F&R D44s locked & trussed, 242HD, IRO TC Skid, KMA Bumper, 35's
2006 Saturn Redline -2.0L Eaton supercharged I4, GMPP Stage 2, Custom Tune, AEM CAI, Ebiach Pro Kit w/ swaybars, EVO Ventus V12s (13.76 @ 103.85)
2006 Pontiac G6 GTP
2012 Nissan Juke - (hers)
2000 SV650 - naked, integrated tail light, sliders, corbin, pilot roads, RK chain & sprokets, D&D full exhaust, FactoryPro Stage I jet kit, +4 Ignition Advancer, Barnett race clutch
2006 Triumph America 900 - Full Dresser

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post #5 of 44 Old 08-14-2012, 08:46 PM
archinate82
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Try a shot of PB or something like that before you take out the old plugs.

Then make sure you put a thin coat of anti-seize on the new plugs and lube the coils with some dielectric grease.

Did mine about 30k ago, so it's time to do them again I think.
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post #6 of 44 Old 08-14-2012, 09:02 PM
billzcat1
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Quote:
Originally Posted by archinate82 View Post
Try a shot of PB or something like that before you take out the old plugs.
Do this, but be very sparing with the penetrating oil. You don't want a ton of oil draining down into the cyl when you pull the plug out.

Putting dielectric grease on the coil boots will help keep them from sticking to the plugs for future changes.

Although.... that $63 coupon sounds pretty good when you consider the giant PITA that cyl #8 is.
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post #7 of 44 Old 08-14-2012, 09:38 PM
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Quote:
Originally Posted by billzcat1

Do this, but be very sparing with the penetrating oil. You don't want a ton of oil draining down into the cyl when you pull the plug out.

Putting dielectric grease on the coil boots will help keep them from sticking to the plugs for future changes.

Although.... that $63 coupon sounds pretty good when you consider the giant PITA that cyl #8 is.
Mine actually wasn't too bad. Thank god. That's a good deal considering it takes awhile to do all 8! Now do a 6cyl on a xterra.... that 6th one is the worst. 2 extension and 2 swivels.....

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post #8 of 44 Old 08-14-2012, 10:53 PM
cadga1390
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now try an LS1 in a 2002 Trans AM WS6! talk about working in tough conditions. especially with factory plugs at 145k miles (owner must've lost his mind) those wires were glued on at that point. once u reach that point you've mastered spark plugs imo lmao.
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post #9 of 44 Old 08-15-2012, 04:20 AM
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i've done my own at 30 and 60 ... but if the dealer will do it at 90 for $63 i'll go that route

'15 WK2 Diesel 4x4 ORII, Nitto TG2 275/65r18, BORA 1"f/1.25"r spacers, RRO super sliders
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post #10 of 44 Old 08-15-2012, 04:21 AM
shepd
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If the $63 includes the plugs themselves, get the dealer to do it. At least up here, that would just barely buy you the plugs and nothing else.
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post #11 of 44 Old 08-15-2012, 07:10 AM
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Quote:
Originally Posted by shepd
If the $63 includes the plugs themselves, get the dealer to do it. At least up here, that would just barely buy you the plugs and nothing else.
Really? 4.7 calls for copper. So like 16 bucks for all 8....

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post #12 of 44 Old 08-15-2012, 07:32 AM
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Had the same problem. I attempted to do them but those freakin coil packs would not come off. I ended up putting it off for a few more months. Finally sprayed some PB blaster around them and pulled like hell. Once they were lubed up they came out pretty easy. Make sure, like billzcat said, put some electric grease on the orings of the coil packs so they shouldn't stick next go around.

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post #13 of 44 Old 08-15-2012, 12:37 PM
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yeah up here in canada theyre like 5.50 a piece plus tax for plugs alone. #8 is a ***** too
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post #14 of 44 Old 08-15-2012, 02:31 PM
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Quote:
Originally Posted by cadga1390 View Post
now try an LS1 in a 2002 Trans AM WS6! talk about working in tough conditions. especially with factory plugs at 145k miles (owner must've lost his mind) those wires were glued on at that point. once u reach that point you've mastered spark plugs imo lmao.
I know exactly what you mean. I have a '00 Camaro SS. #8 had to be done from below. The 4.7 is EASY in comparison. Even #8 in the 4.7 isn't bad if you get the throttle and cruise control cables and the wiring harness out of the way. It takes a few more minutes to disconnect that stuff, but I think it's worth it.
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post #15 of 44 Old 08-15-2012, 02:37 PM
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i change #8 by reaching through the flipper glass, much easier once i figured that trick out
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