Originally Posted by 77olds

You don't have to fully submerge the engine to hydrolock it - you just have to get a gulp of water into the intake, and that can easily happen when you're splashing through large puddles due to the location of the stock air cleaner.

Even if just one cylinder is filled with water, the engine will be locked up.

BUT it doesn't necessarily sound like this is the case.. so do what was suggested about the starter, and if that doesn't help, then start to worry.

I did successfully revive my 96 Cutlass with the 3.1 after hydrolocking it in a flooded out parking lot. 3 cylinders had water in them. I pulled the plugs, sprayed a bunch of WD40 into the cylinders, then cranked it over some.. sprayed more, cranked it more.. eventually the water was all gone.

Did two immediate oil changes (to help flush out any water left behind).

Gave me another problem free 10k miles before I sold it.

Originally Posted by UsmclovesXJ

You sir got lucky.