1988 BB Detroit Deisel 8V92 Wont Start

[Crabber82]

Attention all Gurus,
My 1988 BB WL with the Detroit Diesel 8V92 is failing to "FIRE". Started last week to go on a week long outing and when I tried to come home she failed to start. It was a very expensive tow back to Katy, Texas.

So here is the skinny:
Good strong Batteries
engine cranks, good starter
fluid levels all at operating levels. Oil just replaced. oil filter replaced.
Fuel filters both Racor and Secondary replaced, filled and oiled seals
Yes, the A/T switch is detente to the left or run position.
Master battery switch in "on" position

Fuel lines have been checked and "bled" from fuel tank to fuel pump.
Yes, there is fuel on board fresh and new.
Generator is running so fuel confirmed in tank.

all this said, My Bird is failing to fire and I am perplexed. If anyone can point me in the right direction I will be happy to try. Two diesel mechanics visited the site and both tried exactly the same stuff I did...

Gas rag in air filter tickled the ignition but failed to keep it running. Starter fluid (in small doses) spurred the same result.

manual primer button pumped to a rigid firmness turns into a marshmallow after key turned.

Has anyone experienced a like incident?