carboned valve seats

Ever hear of it before? Ever flooded an engine with gasoline?<----it's a liquid
I didn't say dump a gallon of water all at once. Just a trickle small stream, if it would kill a car everytime water got near it you wouldn't be able to drive in the rain. Water sprayed into a motor under high load properly can actually increase hp. Long known fact, also used in high output motors under high boost applications.