Re: Isuzu 2AB1??? Full of fresh water - salvageable?
If you can only turn it over 270 degrees there may still be water in one of the cylinders. At this point there doesn't appear to be much to lose? Before trying to start it suggest you remove the injectors for cleaning and/or the glow plugs to try to pump all the water out of the cylinders. the injector pump may have water in it? If possible drain & flush. Drain & flush the crankcase, bleed everything, make sure you can turn it over 360 degrees by hand, say your prayers, and try to start it. My guess is that long with water in it even if it fires there may be lots of rust or corrosion on all the moving iron/ steel parts, maybe even the aluminum parts? Might be interesting to try to start it but a re-built same engine would no doubt be more reliable in the long run. Let us know how it all comes out.