I have a a750il w/o spark there is powere to the coils, i changed the crank pos sensor anyone have ideas. Do you think both coils could have went bad, i measured the coil for resistance and between the two terminals it shows resistance but between a terminal and the coil out it shows none which tells me there is a brake.? my car is a 90 750 il v12 i bought it not running thanks for any help