Hi

[springbok]

Hi and welcome

As far as engine bays are concerned, it also depends on how bad a state yours is in. Just remember if you are going to start spraying water all over the show you should take some time to cover up vital components. Modern engines are full of expensive electronic gizmos which don't take kindly to water. Depending on how new your car is, it is likely that you have a lot of plastic covers which, quite frankly are mostly there for show. These actually make it easier to keep your engine compartment clean and neat as they cover up all the dirty/dusty areas. You will just need to wipe them (the covers) down with a good grease cutter and then dress them to make them shiny.

If however you have an older car you will be able to look down into the depths of the engine and thus see all the dirt clinging to the block/gearbox etc. If you want to clean this off then go the route of an all purpose cleaner and a brush to agitate the dirt and then rinse off.