Cover all important components of your engine like the alternator and ECU.
Once your engine is covered, spray a degreaser and/ or wheel cleaner into all the components of the engine bay and let it sit for up to 5 minutes. Make sure the engine is cold, and you are in the shade or out of direct sunlight.
Using a snow foam cannon or similar, cover all of the engine components with a thin layer of foam. Then use a soft bristle brush to agitate all the remaining dirt.
Rinse all of the engine components with low pressure water, avoiding all electrical areas when possible.
Dry the engine bay with a leaf blower or similar, paying particulate attention to the electrical connections.
Once the engine is completely dry, apply a low sheen coating to all of the plastics to protect & enhance the shine if the plastic. Leaving a like-new finish.

How to detail an engine bay

How to detail a car

When detailing a car, always start with the wheels. Spray wheel cleaner on each wheel and let it sit for 2-3mins, then rinse it off. Then, using a brush and a wheel mit, go over all the areas to insure all areas are spotless.
After the wheels, pressure wash the door jams/ boot jams. With a soft bristle brush and a foam bottle, foam the door jams and agitate the area to remove all the dirt. When done, rinse it off.
Using a snow foam, thoroughly cover the vehicle with a thin layer of foam, let it sit for 2/3 minutes, then rinse it off.
With the same snow foam, cover the vehicle again, then use a new microfibre cloth and the two bucket method to insure no swirls are introduced into the paint.
Once the contact clean is done, proceed to rinsing all of the vehicle.
Optional: Use a spray on - rinse off ceramic sealant to enhance the gloss and make it easier to dry the vehicle.
Using a leaf blower or similar, dry all of the vehicle, paying particulate attention to areas where water stays trapped like the mirrors.
Then, use a high quality drying towel to finish off the drying process, don’t forget to dry the door jams too!
Once the vehicle is fully dry, you can dress the tires with a dressing and clean the water residue on the windows.
Job done!