1999 Ford Crown Vic – This was the first time I had ever even heard of this happening and then to have the tow truck driver tell me that this was common seemed insane. The saddest part is that this is even a Police model! Cylinder #3's spark plug blew clear out taking out the coil on the way out cruising at 45 MPH. Now a shop wants $2000 to replace the head and the Timesert kit attempt to replace the threads is $400. The worst part is that this is so common that Helicoil and Timesert have hits specific to these motors.