I think the water got in by overcranking and using a water hose with pressure forced water into motor. Anything I should try that dosnt need a compression gauge, don't have one. Should I see if it will fire with starting fluid?
Very likely the cause, especially if it was running properly before the hose job. If it has a water cooled exhaust manifold water could have entered the exhaust ports. Water in or on the injector tips may be part of the problem? Perhaps removing the injectors, spinning the engine over to pass any remaining water out of the cylinder / pre-combustion chamber (if it has those)
may help. Change oil & filter, fuel filter, have the injectors checked by a shop and try to re-start it normally. Don't use ether if it has pre-chambers. If it has glow plugs glow the heck out of it. Let us know how it all comes out.