Thanks for all the great replys.

Leathermang, I don't think the "Pop" was timing chain related. Remember, I said the engine caught and ran after the sound of the Pop. If the Pop had been the timing chain, I don't think the engine would have fired up after the Pop and let me drive to the library, where she would not restart.

As to those comments that relate to fuel starvation, I will loosen the connections at the individual injectors and see if I have supply there. What a coincidence that would be, though, huh?. That a fuel-related issue would crop up just when, for the first time, I think, I have a failure of the Glow Plug light to light up in the instrument cluster!

Thanks again, I appreciate all the good input.