This is a common rail computer controlled engine not the familiar mechanical pump and injectors so the problems are bit harder to solve. Certainly the primary fuel supply should be carefully inspected and tested for air leaks
and restrictions but if this all checks out and you have an air free supply of clean fuel the diagnosis becomes a bit more difficult because it is very possible that one of the sensors is the culprit, sometimes itís one of the two on the actual common rail but you really need to access the error codes to establish whatís causing the ECU to deny startup.
Be very careful about dead cranking the engine for too long, itís possible to flood the exhaust
to the point where the back pressure becomes problematic and in the very worst case raw water
can reach the exhaust
manifold. Just close the raw water
intake till she fires up.
Dirty fuel is really really bad for common rail engines in ways far beyond whatís bad for mechanically injected old style fuel systems, the pressures and tolerances far exceed those in traditional injection systems.