I was on my way to drop someone off earlier and drove though a deep puddle which I didn't spot at about 50mph. Thought nothing off it, dropped the person off and drove back home 6 miles with no issues. I have returned to the car about 3 hours later and when starting the engine the engine managment light was flashing and the engine was rumbling below 2K revs. I stopped and started the car a few times now the engine managment light is constant. I took it round the block and it feels there is a major engine issue. The engine does not sound right, it almost sounds clicky. Can anyone advise me what to do next, or what it might be? Cheers Oli