Two things. The glow plugs will pull 20Amps a piece. The rack on the fuel pump can be stuck. The side cover on the fuel injection pump can have no dents in it or be overtightned.
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Benzmac:
Donnie Drummonds
1992 500E (very soon I hope

1981 280GE SWB
ASE CERTIFIED MASTER AUTO TECHNICIAN
SERVICE MANAGER FOR 14 BAY FACILITY
MERCEDES SPECIALIST 8 YRS
PARTNER IN MERCEDESSHOP.COM