Scariest thing I've done on a Merc diesel is remove the stuck glow plugs in my OM606. I used an impact, and despite the fact that I know it is the better way, I was still on pins and needles until I got them out. Is there any OM606 owner who doesn't fear the glow plugs?

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'99 E300 Turbodiesel, '82 300TD, 1996 12V Cummins Turbo, '94 Neoplan - Detroit 6V92TA