Apologies. Not to be an ass but, those are not proper cleaning tips for cleaning the engine. The only good tip is that if you can, make sure the engine is cool.
Dont think u should be spraying the crap out of the engine compartment. Use salt away or similar spray. Let it sit 10 min and mist off w a hose...mist not a jet spray. Air dry and lube generously w WD 40 or similar.