C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

1995 sparkplug change

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Old 01-02-2010, 02:16 PM
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runner1
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Default 1995 sparkplug change

Looking for some kind of instruction on how to change sparkplugs on 1995 corvette.
Old 01-02-2010, 02:30 PM
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tblt44
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Remove and install using anti seize a few are tough but doable.
Use A/C delco platinum plugs

The wires are real tough going to the opti.I am waiting to do mine when I pull the waterpump to fix an oil leak.
Old 01-02-2010, 02:46 PM
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desertmike1
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Bandades, and Beer

Old 01-02-2010, 02:59 PM
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skybolt31
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If you do an archive search on this, there will be lots of tips. I didn't think they were that bad, the drivers side went ok, some people take parts of the fenderwell off or the ASR unit, I didn't do any of that and was able to get them all ok. On the passenger side, the rear two are the most challenging. I found that after cracking them loose, standing on the drivers side of the car and reaching over the engine to get them the rest of the way was helpful.

As someone else said, the wires (esp drivers side) are the much tougher job.........
Old 01-02-2010, 03:48 PM
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Sidney004
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Taking the fenderwalls off(very easy) is very helpful; the ASR unit is not in the way. Have a variety of extensions(standard and wobble) and a u-jointed spark plug socket
( http://www.zdmak.com/wbstore/main.as...MAG2UNV&CTMP=1 , I paid $6 for mine at Kragens)
I also used a flex head quick release rachet (http://www.craftsman.com/shc/s/p_101...keyword=rachet)
The rear 2 on the passenger side are the only tough ones; it really wasn't that bad. This was a "walk in the park" compared to changing the 12 plugs on my 2000 Mercedes C280 V6, which was a total nightmare
Old 01-02-2010, 07:34 PM
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jaa1992
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Not that I would reccomend it - pulling the exhaust manifolds makes them real easy to pull.
But then again I'm pulling the heads so lots of stuff is out of the way
Old 01-02-2010, 07:43 PM
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aboatguy
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Originally Posted by jaa1992
Not that I would reccomend it - pulling the exhaust manifolds makes them real easy to pull.
But then again I'm pulling the heads so lots of stuff is out of the way
Removing the manifolds is a waste of time.... you can gain all the access you need with the manifolds still installed...


....

Seriously I remove the inner fenders and the ac compressor (shield underneath it too) IOT get plugs done in the shortest time.

I find I can gain access to some of the plugs from underneath....I get the one by the AC/Heater by sitting on the tire and reaching backwards (probably for the same reason earlier poster recommended reaching across engine from drivers side to access same plug)


However, at least with the LT1 cars plugs are easier than lots of other vehicles but not as easy as the Modular Cobras.


Mike

Last edited by aboatguy; 01-02-2010 at 07:52 PM.
Old 01-02-2010, 07:52 PM
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Preacher94
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If you remove the serpentine belt and then the belt tensioner - one bolt - you have all the room you need to get at the driver's side wires going into the opti.
Old 01-02-2010, 11:57 PM
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littlesk8cracker
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i just did them on my 94 a little while ago. for the driver side, i removed the serp belt, the tensioner, and i moved the ac compressor off to the side. i also removed the small centerpiece of the fenderwell directly above the a-arm. this made it pretty easy to get to the plugs and wires. then on the passenger side, the front 2 are easy, the back to arent too bad, but much much easier done from underneath, just jack the car up and u can get right to them. good luck!
Old 01-05-2010, 07:07 AM
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onedef92
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The No. 2 plug on the passenger side is a legendary ****. But at least we have the clamshell hood for easier access...and the front tire "work bench" to sit on. I can't imagine doing the job in an F-Body!
Old 01-05-2010, 07:21 AM
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pcolt94
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Even for the experienced, there is no magic bullet. The drivers side is all doable by just moving the ASR out of the way.

The only secret to getting the right side plugs out is to have a good assortment of sockets, extension lengths, ratchets, any special tool you might have, and possible some creative thinking at times.

And of course don’t forget that special piece of 4” rubber hose to put over the plug to insert it initially in the threads. The cheapest tool you will have that will do the most.

The plug wires are a whole different effort and definitly a PIA. Unless your doing a W-pump or opti which is the time to do the wires.
Old 01-05-2010, 07:36 AM
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WW7
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And make sure the car is stone cold when doing a plug change... ..WW
Old 01-05-2010, 11:36 AM
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I'd have a set of replacement plug wire looms and holders on the ready, too. The O.E.M. ones will break off in your fingers as you go to remove them. You can order them online from Mid-America Motorworks (MAM).
Old 01-06-2010, 07:04 PM
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warship
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the best way to get the rear 4 plugs is from under the car soooo easy. just try once and you will never go back.

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