If you think there is a possibility of water in the engine, pull the injectors and with the seacock turned off, spin the engine over, if there is water in there, you will know as it will blow out. If there is water, then spray some kind of lube like WD-40 in each cylinder and spin it over, apply WD-40, repeat. Then leave a bunch of oil
in each cylinder, heck fill them up.
Fix problem and with injectors still out rotate engine by hand first to expel oil
, then spin it over with the starter. Reinstall injectors and start her up, then open seacock.
I doubt there is water in there, put pulling an injector and spinning her over will tell for sure.
I have not seen an elbow clog to the point where it won't run, but that doesn't mean it couldn't.
If you are unable to do this, I'd call a mechanic
ASAP just in case your right, if you act fast I do not think it will be damaged, leave salt water
in there and I'm sure it will be.
Often water in an engine will hydro lock it, a Diesel
has a very small compression
chamber and only a little bit of water will lock one solid as water isn't compressible of course, if it's spinning over that is even more evidence to me that there isn't water in there.
But call a mechanic
and be sure, if your right, you have to act fast.
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