Step 1:  Insert quarters or tokens
Step 2:  Turn dial to "Foaming Engine Cleaner"
Step 3:  Spray liberally into engine compartment, avoiding paper filter things and anything else that might suck in water
Step 4:  Let it sit for a minute
Step 5:  Turn dial to "Pressure Rinse"
Step 6:  Rinse engine compartment
Step 7:  Go home.
SOB