Someone has to have an opinion.
Here is mine.
Detailing: Time 1-3+ hours
Clean away loose debris from engine compartment
Remove plastic engine covers if possible
Cover fragile electrical components
Cover air filter, intakes or carburetors
Cover Breathers
Vacuum under hood insulation
Clean under hood insulation by hand with cleaner and towels (if applicable)
Vacuum under hood insulation
Clean painted edge of underside of hood by hand (if vehicle has under hood insulation)
Rinse engine compartment
Wet fenders, windshield and surrounding area or
Cover the fenders, windshield and surround area
Spray cleaner to engine compartment let dwell for 3-5 minutes
Spray cleaner to underside of hood if painted let dwell for 3-5 minutes
Rinse cleaner from engine compartment and underside of hood
Use leaf blower to blow water out
Dry using towels
Repeat cleaning steps with scrubbing if necessary
Remove covering from electrical components, intakes and other parts
Polish unpainted metal parts (if needed)
Wax painted engine parts
Wax painted areas of engine compartment
Wax underside of hood
Wax edges of underside of hood if vehicle has under hood insulation.
Install plastic engine covers
Clean under hood plastics and rubber if needed
Dress under hood plastic and rubber
Wipe down under hood plastics and rubber after 5-10 minutes to reduce dust and dirt collection and to gloss
Lube hood hinges or lift struts
Lube hood release assembly
Wipe down prop rod
Lower prop rod if applicable
Close hood
Cleaning: time 5-20 minutes
Possibly cover components
Spray cleaner let dwell
Rinse cleaner
Let engine idle to dry
Spray protectant over entire engine compartment
Lower prop rod if applicable
Close hood
Eric