Cleaning your engine compartment?

run engine to get her warm but not hot.
pull battery
spray simple green on everything and scrub with a soft bristled nylon brush
rinse with HOSE PRESSURE only
dry everything by blowing with a small electric leaf blower or shop vac.
warm engine up again.
coat EVERYTHING but belts and air filter with WD40. Fender to fender, firewall to radiator
let creep into everything, then wipe/polish off excess as needed.