2002 Ram 3500 cummins no start?

I've been having an intermittent no start issue the past couple of months, engine turns over but no start, then it will start.
I bought the truck in 2010 with 100k on it and now it has 178k
I added an Airdog 150 fuel system back when I bought it.
I have 14 psi of fuel pressure
Tonight it would not start and I had to get towed home.
Any ideas?

I think I found the problem, found a corroded terminal on the fuel pump relay.

Yay . . . easy fix !!! Always check the easy stuff first !