check dieselgiant.com's diy on gps.

You DO NOT want the tip to break off, blow a hole through the prechamber and prechamber and gp go out through the valves.

__________________
http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42