Okay I was riving home and I drove into a dip in the road filled with water and some it covered my engine. As soon as I got home car died and wouldnt start. I cleaned water from around spark plugs and it started but white smoke comes out. So I changed the oil and quit for awhile but now it back. I bought that HEET stuff and put it in my gas and it still does it. I let the car sit and idle and it will idle for like 2 minutes then the rpms start going down and it dies. I went and bought some new spark plugs and spark plug wires and it seems to idle for a good while now but there still white smoke coming out and just leaving it idle the temp got up to 3/4. The guys at autozone said maybe when I drove into the water it froze my engine kind of and the head cracked. Anyone have any ideas?