gary,
Yep, hydraulic pump seal was bad. Even sitting down in the recessed area of the pump you could see a crack visible all the way through the circular spring retainer before I removed and replaced with the new seal.
As for the injection pump...someone has been in there before me and I'm not sure why...and I'd bet they weren't sure why either. It was the sudden and unexpected loss of power and performance that made me try to connect both pump problems together....there just isn't anyway they can be related.
Cord, I have a dial indicator but am not sure how that could help me. The dial indicator would certainly measure pump plunger travel but can't help me measure the internal pressure of each. I need a total (combined) pressure of 2275 PSI from the injection pump to the injectors. That is my dilemma...no test equipment to test individual pump plungers to produce an equal and combined pressure of the above psi.
Good thinking though and I really appreciate the suggestions.
Mark