spark plug torque

[Jamesp]

From the Boxster service manual as of MY 2005 - which usually means MY 2003 for engines:

Spark plugs Using new spark plugs Tightening torque 30 (22 ftlb.) Nm
Spark plugs Re-using old spark plugs Tightening torque 25 (19 ftlb.) Nm

The recommendation is to back off on used plugs.

[lkchris]

Originally Posted by Jamesp

The recommendation is to back off on used plugs.

... because the crush washer is already crushed.