Just after a bit of help with my mate mk4 golf.Its a 1.6 16v. It has had a water leak on the car for over a year and instead of topping it up with coolent he has just been topping it up with water.

i got a phone call the other week off him saying when he is starting the engine it is spinning over fast.

To cut a long story short i think the water has frozen.He took the head off cause it sounded like there was no compression.There is no damage to the valves or rockers.We have built the engine back up and.now it wont start. Its getting a spark and fuel.We toed it round the block and had it running for a few mins but now it still wont start.Does anyone know anything about these engines.

thanks.