Something strange has been going on with my '81 300TD.
This car is known for it's reliable and flawless operation over the last 20,000+ miles.
Last week at work the car would not start, it was the first really cold evening of the fall, about 32. I had a friend come over and jump it, and after quite a while we got the benz running. I drove home about 2 miles and noticed no problems. The next morning the car would crank, but wouldn't catch.
I checked the plugs, and replace three of them. I replaced both fuel filters, i primed the system, still wouldn't start. I bought a 1.5 amp trickle charger and have that on at all times.
A friend (the PO) suggested that i crack the injector lines and check to see that fuel would come out, it did. i adjusted the valves today, still won't start.

i've been running biodiesel for about three or four tankfuls, but about 30 miles before this problem began, i bought about 4 gals diesel from a busy shell station. the car had been quite close to empty at the time.

I'm getting at a loss for ideas. The battery reads about 12.7V at rest and about 11.6 or so when cranking.

:wtf: