Spark Plug torque spec

[ihkskim]

its that time again to change my plugs. was wondering what the torque specs were for our cars. cant find it anywhere online or on here.

2 finger special?

thanks

*nm. found a vid online

28nm + 90 degrees

[ncharpy89]

When I was researching I found it to be 22ft lbs. That's what I torqued mine to even though it felt pretty tight for a spark plug, however there are crush washers on them so that needs to be taken into consideration. I'd say you're right on, 28nm = ~20.5 ft lbs.

[scottycs]

hand tight plus 90 degree

[littleredwagen]

On all of My VWs and Audis I have always done 22ft Lbs. The plugs always come out without destroying threads but don't loosen on their own causing a compression leak

[jran76]

its that time again to change my plugs. was wondering what the torque specs were for our cars. cant find it anywhere online or on here.

2 finger special?

thanks

*nm. found a vid online

28nm + 90 degrees

That is the torque spec for the Bosch plugs. DO NOT tighten the NGK plugs to that spec. They are more like the 22 lb/ft mentioned above.

[wwhan]

From NGK: Aluminum: 18-21.6 lb. ft.

NGK 94460 PFR8S8EG, Thread Size: 14mm

http://www.ngk.com/product.aspx?zpid=29891

https://www.ngksparkplugs.com/about-...g-installation

[dizzlesizzle]

haven't done mine yet and was planning on doing it this spring...do the factory plugs need a special tool like the BMW's 20 or so point spark plug?

[ihkskim]

That is the torque spec for the Bosch plugs. DO NOT tighten the NGK plugs to that spec. They are more like the 22 lb/ft mentioned above.

ooo thanks for that info. i got the NGK's lol

[vwblackb5]

Another reminder, it's best to change the plugs when the engine is cool. The aluminum head expands much more than the steel spark plugs. Torquing down a set of plugs in a hot and expanded head will cause the head to contract on the plugs once it cools. This could lock them into place or snap when trying to remove later on. Lastly, 22 ft*lbs like everyone said.

[ihkskim]

Another reminder, it's best to change the plugs when the engine is cool. The aluminum head expands much more than the steel spark plugs. Torquing down a set of plugs in a hot and expanded head will cause the head to contract on the plugs once it cools. This could lock them into place or snap when trying to remove later on. Lastly, 22 ft*lbs like everyone said.

just 22lb or 22lbs plus 90 degree?

[dizzlesizzle]

does a regular spark plug removal socket work? My older BMW needed a special tool from BMW to get the OEM ones out.

[jran76]

just 22lb or 22lbs plus 90 degree?

NGK's are 22 lbs and nothing else.

Bosch are 28nm PLUS 90 degrees.

does a regular spark plug removal socket work? My older BMW needed a special tool from BMW to get the OEM ones out.

Yes, regular spark plug socket works fine.

[dizzlesizzle]

NGK's are 22 lbs and nothing else.

Bosch are 28nm PLUS 90 degrees.



Yes, regular spark plug socket works fine.

Cool thanks for the reply.

[vwblackb5]

just 22lb or 22lbs plus 90 degree?

22 ft*lbs and that's it. I hope you're using a torque wrench. It will click at that setting.


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