Spark plug torque value??
Thread Starter
Le Mans Master
Joined: Jan 2009
Posts: 5,656
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From: ocean springs mississippi
Melting Slicks
Joined: Jul 2010
Posts: 2,998
Likes: 238
From: Surprise, Az
I would use a bronze/brass small wire brush if you want to clean the threads off and re-install. You have to be careful though not to leave any broken bristles caught in the tip.
If the plugs are really tight, they may be easier to break loose if the engine is warmed a bit. I haven't had to try this, but I think the aluminum head may warm up and expand a bit quicker, making the plug easier to break loose. This is supposed to work well on the Z06 brake pad screws too, loosen while the caliper is hot. When I replaced the plugs on my Denali at 100k miles, they all broke free without undue strain. The real issue was removing the spark plug boots. I ended up using a shoelace to do that...
If the plugs are really tight, they may be easier to break loose if the engine is warmed a bit. I haven't had to try this, but I think the aluminum head may warm up and expand a bit quicker, making the plug easier to break loose. This is supposed to work well on the Z06 brake pad screws too, loosen while the caliper is hot. When I replaced the plugs on my Denali at 100k miles, they all broke free without undue strain. The real issue was removing the spark plug boots. I ended up using a shoelace to do that...
