torque specs for spark plugs on 2.0 engine

[Don Lockwood]

I did a search and could not find the info.... anyhow, i will be replacing the spark plugs on my 2004 Mazda 3 GS (canadian) 2.0 engine and i cannot find the torque specs for the plugs.

So, how much torque is needed? I will be installing NGK Iridium IX spark plugs. On sale now at Canadian Tire and about 1/3 the cost of the original Mazda parts.

Thanks!

 

[PATMAN65]

firm tight, so as not to break them, but not ass tight!! Machine shop 101
from the CNC guy...Me

 

[Don Lockwood]

BTW... i have a torque wrench, so i need torque figures. I don't want to just do the job my feel. Thanks.

 

[kziwarrior]

You've probably already replaced them but for anyone in the future:
http://www.ngksparkplugs.com/tech_support/spark_plugs/installation/index.asp?mode=nml

The stock replacement plugs (3811) are 14mm conical seal w/o gaskets so ideal torque is 7.2~14.5 lbs.