I think I finally got my answer. About a week ago, after I stopped at a little market, it wouldn't start again. Turns over ok, but never catches. I'm getting fuel to the injector pump and the glow plugs are fine. I had it towed home. Last weekend, I removed the oil filler tube so that I could see the injector pump end that runs off the camshaft gear. I could see it turning. I hope that, that rules out a timing chain issue.
Soooo, does this basically say that the injector pump has failed and it's time to remove for a rebuild? Is there anything else that I can test to be sure that it's the injector pump?
Thanks for any suggestions and/or replies.