there maybe info on testing coils at Benzworld.org I noticed my coil,that was bad,had green corrosion on the place where wires plug in.But the metal was ruined and you could'nt clean it.Also I buy 99.9 % of my oem parts on ebay. Pelican sells alot of junk stuff now.

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1999 w140, quit voting to old, and to old to fight, a god damned veteran, deutschland deutschland uber alles uber alles in der welt