How to clean up the engine bay, that would be the question that trouble you for a very long time. There's dust, dry, unclean, oil spill, leaks, and so on ... So now you wish to clean it, it will need to spray with cleaner, brush, and wash several times, however you're a bit worried if spraying water onto the engine will harm any components, or even worse, turned off your vehicle entirely.
For security, some people will inform you to remove the battery prior to cleaning the engine. In my opinion, before you spray the car's engine compartment with water and degreaser, be sure to cover sensitive electrical parts with a plastic bag. Those are the locations that you truly don't want water or degreaser pooling in. Cover these electrical parts with a bag, then make sure to remove the bag prior to you begin your engine.
How to clean the engine bay;
1), Use a Blower to remove any loose Debris;
2), Cover the generator and drive belt;
3), Cover the battery and ECU;
4), Cover the consumption inlet;
5), Start Rinsing from the Top;
6), Spray down the engine bay with soap;
7), Don't scrub the hood liner. If you need to, then carefully scrub it; and tidy every nook and cranny you can;
8), Rinse the hood liner top to down; Making the effort to peruse these websites (https://croccitymag.com/) is a great method for every automotive owner to learn knowledge on car maintenance tips.
9) Remove the covers on alternator, drive belt, battery, ECU and consumption inlet;
10), Use a Blower to remove the water;
11), Wipe down the engine bay and the products you covered.