As a side note to this thread, I cruisded for a couple of years with a converted autodiesel (Mercedes 190D), and found it to be very reliable. It had a hand pump on the injector pump
that if you got air, or ran the engine out of fuel, you could just give the hand pump a dozen strokes, and it would start again. No bleeding of injectors, or the usual mess of leaking diesel. My Perkins
would die deader than a stone with the slightest of air in the system, and need a complete bleeding. At one time I also owned a Volkswagon diesel that I never had to bleed. If you ran it empty, you put in fuel and cranked it until it started. It was very reliable. I have no idea why some injections systems are self bleeding, and some are not, but it would seem logical for all of them to be. ___I am sure someone will prove me wrong!!! _____Grant.