Spark Plug Torque
b.benz at charter.net
Mon Nov 24 10:53:56 EST 2003
> From: Eric_R_Kissell at whirlpool.com
> I changed the spark plugs in the 1991 200q 20v yesterday.
> Bentley showed a
> tightening torque for spark plugs at 22 ft-lb. This seems too high to me.
> Can anyone confirm that 22 ft-lbs is correct for these spark plugs and that
> it will not lead to stripping of the threads?
You can not strip the threaded plug holes by tightening, the plug will
shear off first. You may bugger up the the threads in removal if you
haven't greased or antisiezed the plug and the plug has been in place for
100K. IMO, the only use for a torque wrench would be on head bolts.
More information about the 200q20v