I have been posting about my starting problems with my 300 TDT since
last fall. I have things pretty well narrowed down now, I think. I
have been starting to suspect that the problem has to do with air
entering the fuel system or some other fuel starving problem.
My Benz has been parked and inoperative for a few weeks because of the
starting problem. Yesterday a friend of mine towed me up a nearby
mountain and then we turned around and removed the rope and then I
began to coast back down the mountain. Once I reached 35 mph I turned
on the glow plugs for a few seconds and dropped the car into low
(automatic transmission). The engine started right up and ran
perfectly. I drove around for a half hour or so and then drove back
up the mountain, running the motor hard so it would get a little
hot. I shut the motor off and started it a few times, and it started
Today it is 22 C (72 F) here. I just went out and tried to start the
car. It began to start normally, and then, just when the engine
smoothed I released the starter and it died. Then when I tried to
start it it acts like it is out of fuel. I can't seem to find
anything wrong with the fuel delivery system and no leaks. I have
replaced the fuel lines and the fuel filters and the priming pump.
Once the engine starts, it runs great, so I think the injection pump
must be working right.
What are the possiblities for fuel leaks? Is there a supply pump in
the tank on these models?