without an Alfa
Join Date: Dec 2011
Location: United Kingdom
sounds like it is suffering from hydraulic lock. It is actually not in gear but water has got into the combustion chamber (it gets sucked in the air intake because that is only a few inches from the ground at the front of the vehicle)
as the engine turns the combustion chamber gets smaller (down to around 5% of its maximum volume) unfortunately this can't happen when it has water in it so something has to give.
several things could happen .
1. you could remove all of the spark plugs and turn the car over to push the water out and allow it to dry, then replace the plugs and see if it will start. If you are extremely lucky then it will.
2. If it still won't start then you are looking at a major stripdown of the engine because, as Bap says, something inside has bent. In which case you really don't want to be drawn into paying for someone else's bad luck/stupidity