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

'96 Spark Plug Change

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Old Jun 25, 2020 | 01:13 PM
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Default '96 Spark Plug Change

Does anybody have any tips on getting to, removal and replacing #8 plug? I have done the driver's side, removed the wheel, inner fender liners, and was curious if there are any tricks. Number 7 was bad enough so I am not looking forward to number 8. Whoever replaced the last set didn't use any anti-seize so they are tough breaking lose with such little room.

Thanks in advance, I did search but it really didn't turn up anything.
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Old Jun 25, 2020 | 01:17 PM
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It's not easy. Having an assortment of spark plug sockets to choose from helps. I probably have at least eight different ones. Some have a hex-head on them that allows the use of a box-end or open-end wrench on the socket, as well as the usual 3/8" square drive. Patience is required. Beer might help. Band-Aids might be useful after the fact.

Live well,

SJW
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Old Jun 25, 2020 | 01:20 PM
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Thanks SJW!

I have plenty of beer and bandaids. So I will try and have enough patience to get it done, so I can drink the beer and put on the bandaids!
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Old Jun 25, 2020 | 02:32 PM
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https://tite-reach.com/ I use one of these. Dan
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Old Jun 25, 2020 | 03:34 PM
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Thank you, Dan. I will check out the link. Right now I am trying to get number 6 started by hand in its blind hole and having difficulty. If I can just get it started I think I can tighten it up with a gearwench on the end of the socket. I looked at 8 and it looks impossible. I don't think I can even get my fat, short fingers hand in there to even pull the plug wire off.

Thanks again.
Scott
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Old Jun 25, 2020 | 03:50 PM
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I used just the socket and vise grips to get out #8
-or-
How to Change #8 plug

Summit Racing




Last edited by KurtK; Jun 25, 2020 at 04:19 PM.
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Old Jun 25, 2020 | 05:25 PM
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Thanks for all of the replies. It is greatly appreciated. I am down to putting #8 back in. I got it out with a flex head ratchet and socket from the top. However, I am having a lot of trouble trying to get my hand in there so I can start the plug. I can just barely hold the socket with the plug in it up to the hole and try to turn it to get it started. I want to at least get it started before I put a wrench on it. I am going at it from the side since there isn't enough room for my hand from the top. The socket I am using is a deep one with the flats on the end to accommodate a wrench if need be, but I am getting nowhere getting it started. Tomorrow is another day, so I will get started in the morning and hope for better luck. At least all the rest of them are done.
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Old Jun 25, 2020 | 08:28 PM
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If your fingers are really short and fat, as you mentioned above, this might be a good time to recruit a friend who has long, skinny fingers.

Live well,

SJW
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Old Jun 26, 2020 | 01:27 AM
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You can try a length of 3/8” vacuum hose over the end of the plug and get it started.
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Old Jun 26, 2020 | 07:03 AM
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Thanks! I will give that a try this morning. That just might be the ticket to success.
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Old Jun 26, 2020 | 11:25 AM
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Ok!!!! I got it started by about half a thread, just enough to keep it from falling out od the hole. Then it was back to the flex-head socket wrench and deep plug socket to finish up the job about 2 to 3 clicks of the rachet from the top at a time.
Thank you for all the help and support. I don't want to ever have to do that again, but at least I will know how to do it.
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Old Jun 26, 2020 | 05:01 PM
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For anyone else, next time My recommendation is to leave old #8 ALONE . It probably doesn't need changing at all. I sent my car in for an oil change to a mechanic I know personally. He knows how much i love my Grand Sport so he decided to SURPRISE ME by changing my spark plugs. HE STRIPPED #8! He tried shoving it back in with Loctite and I think its leaking. Still trying to figure out what is the best way to repair it.
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Old Jun 26, 2020 | 08:23 PM
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Originally Posted by powerplaytwo
Ok!!!! I got it started by about half a thread, just enough to keep it from falling out od the hole. Then it was back to the flex-head socket wrench and deep plug socket to finish up the job about 2 to 3 clicks of the rachet from the top at a time.
Thank you for all the help and support. I don't want to ever have to do that again, but at least I will know how to do it.
Unless you log a LOT of miles on the car, there will probably never be a need to change any of the plugs again. Unless it develops a miss that diagnoses as a bad plug, leave well enough alone.

Congrats on getting the job done. It's not a pleasant one. The wires aren't any fun to replace, either.

Live well,

SJW
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Old Jun 26, 2020 | 08:25 PM
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Originally Posted by rhandle
For anyone else, next time My recommendation is to leave old #8 ALONE . It probably doesn't need changing at all. I sent my car in for an oil change to a mechanic I know personally. He knows how much i love my Grand Sport so he decided to SURPRISE ME by changing my spark plugs. HE STRIPPED #8! He tried shoving it back in with Loctite and I think its leaking. Still trying to figure out what is the best way to repair it.
Awful. Sounds like you need a new mechanic. Sorry to hear of your misfortune.

Live well,

SJW
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