I have a 300SDL that kept going and going for 245,000 miles. Then I filled the tank with 9/10th biodiesel. Car started normally about 20 times and drove fine for about 350 miles or 3/4 tank. Then this morning I turned the switch and engine turned but wouldn't start as if no fuel got to the injectors.
I heard that biodiesel loosens the junk left from regular diesel from the tank & hoses and brings them into filters so I changed 2 filters, the small, plastic prefilter (on a hose going directly toward bottom of engine) and the metal screw-on larger filter( right behind top of radiator). Car still can't start, I turned the switch twice, each time 4-5 seconds.
I did not bleed/re-prime the fuel line, again I had read somewhere that 300SDL automatically bleeds itself.
What am I doing wrong or not doing?