Spark plug removal
Thread Starter
Burning Brakes
Joined: Jul 2018
Posts: 1,113
Likes: 144
From: Miami
Spark plug removal
So I'm planning for replacing my spark plugs soon just for maintenance. Due to unknown previous spark plug service history and some horror stories of broken plugs, I want to increase my chances of success while removing them. Any tips on removing them to avoid breakage? Remove on a warm or cold engine? Use liquid wrench? Use of anti-seize when putting them back? I'd appreciate some helpful tips.
Team Owner
Joined: May 2001
Posts: 87,314
Likes: 1,585
From: Western NY
Engine COLD!
Figure plug wires are questionable, if plug's age is unknown. GM red wires are the best compromise in price/performance, and use a dab of anti-seize of the plug's threads, and a swipe of dielectric grease, on the spark plug wire boots. IIRC, the torque for the plugs is 14-15 ft/lbs.
Figure plug wires are questionable, if plug's age is unknown. GM red wires are the best compromise in price/performance, and use a dab of anti-seize of the plug's threads, and a swipe of dielectric grease, on the spark plug wire boots. IIRC, the torque for the plugs is 14-15 ft/lbs.
Le Mans Master
Joined: Apr 2012
Posts: 7,794
Likes: 2,256
From: Brighton MI
Engine COLD!
Figure plug wires are questionable, if plug's age is unknown. GM red wires are the best compromise in price/performance, and use a dab of anti-seize of the plug's threads, and a swipe of dielectric grease, on the spark plug wire boots. IIRC, the torque for the plugs is 14-15 ft/lbs.
Figure plug wires are questionable, if plug's age is unknown. GM red wires are the best compromise in price/performance, and use a dab of anti-seize of the plug's threads, and a swipe of dielectric grease, on the spark plug wire boots. IIRC, the torque for the plugs is 14-15 ft/lbs.
Safety Car
Joined: Mar 2017
Posts: 3,765
Likes: 938
From: Orlando Florida
Plug torque is 11 lb/ft, and both AC Delco and NGK say not to use anti-seize (but like many here I do, just a little). Good tools to have around are Lisle 51410 spark plug boot pliers and GearWrench 80546 wiggle plug socket.
1st Gear
Joined: Dec 2025
Posts: 1
Likes: 0
From: RI
Black thingy
I just did my plugs and wires. The black thingy up against passenger rear plug is just clipped onto the frame rail. Just pull it up comes right off and you have access to #8 plug. Sorry wrong forum I have a C6.
Last edited by szmike65; Jan 7, 2026 at 10:28 AM. Reason: Wrong forum
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Instructor
Joined: Apr 2021
Posts: 231
Likes: 79
From: Mobile
my 2000 100k came out easy/wires broke.
https://www.corvetteforum.com/forums...t-remover.html
wow this thread was old.
https://www.corvetteforum.com/forums...t-remover.html
wow this thread was old.
Last edited by CFight; Jan 6, 2026 at 08:53 AM.
Race Director
Joined: Oct 2004
Posts: 12,860
Likes: 4,661
It would be interesting to see anyone torque their sparkplugs when the motor is in the car!! I have NEVER seen or heard of anyone torquing their plugs!!! I know I never have. At some point you have to develop a "feel" for tightening things. Torque wrenches are great, but they sometimes can't be used in tight spaces. Also, who cares if you break the ceramic off the plugs on their way out? It's only important you don't break them during install....
