a 7mm drill bit is about $4
you can use it by hand, or you can drill out the guts from an old glow plug, and use it the way the official tool does.


either way, if you have carbon, removing it will aid the glow plug in heating the AIR in the Prechamber to make starting the car easier.

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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 560SL convertible
1987 190D 2.5-5SPEED!!!

1987 300TD
2005 Dodge Sprinter 2500 158"WB
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!