Like most of you guys here, I am finally removing the beauty covers from the motor, as much as I am tweeking and fooling the car lately they are a PIA. but the motor is very dirty, Dust and grime,I just want to clean it up, How do you guys do it without taking it to a detail shop? My car wash has a engine degreaser,cleaner but I am worried about getting the coil packs wet....do you guys throw a plastic sack over them and spray away, I do not want any problems,thanks for the help!