Hydrolocked 3gm30F

[Örjan]

Please help.

I have also done it.

When priming the fuel lines I had the raw water cock open and subsequently flooded one cylinder with saltwater.

The engine now only runs on two cylinders.

So my questions are as follows.

1.what can happen when hydro locked ?

2.Can you hear if a valve/s is bad.

3. Can stuck ring/s be enough to cause the compression loss so that this cylinder does not fire?
4.
does a bent conrod create enough compression loss?

I didn't like the sound so I tried the decompression levers to see which one did not fire.

when i turned the levers for number one and two (closest to the bow)
there was a clear change in rpm and a "ohhfing" noise from the air intake.

Doing the same on the cylinder closest to the stern the rpm did not change an the only difference was a bit more "ticking" from the valves "rockers"

my conclusion was that it did not fire.

I also get raised oil level in the pan.
No water in the oil but I suspect diesel.
(the oil is black but thinner) no greying or signs of water.

the engine run 3600rpm under no load.
(I guess i should avoid doing that until it fires on all cylinders)

What should I do next?
Compression/leak down test?

Should I try some "decarbon-derust-magic marvel oil fixit all additive" if the rings are stuck?

Or should I just take the top of and see what has happened?

Appreciate any help that might solve my problem
Thanks

örjan