My 90 sdl is leaking diesel. The rubber hoses to&return at the tank are dry. All rubber hoses in the engine compartment are dry. I have not followed the metal lines from the engine compartment to the rear as they are hidden by the 2 huge splash pans.
The car leaves no spots when parked but the fuel guage drops even when I am running on veggie.
The car hesitates once every 5 drives or so for a second when on diesel...runs great on veggie.
HELP. Where do I look?

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82 300D....went to MB heaven
90 350 SDL....excercising con rods