I have done this to other cars but wanted to get tips from those of you who wash your own engine compartment on the cayenne.

1. What do you use to spray in there
2. Do you use pressure washer or hose alone
3. Do you take off the plastics and wash them separately
4. Are there areas that you do not spray/wash, or any place that is sensitive and must be careful with
5. Do you do it in your driveway or at car wash
6. Do you take off bottom covers too to let water out easy
Above and any other tips will be greatly appreciated

 

I have just done mine:
1: remove all the plastic trim covers
2: cover as much of the electrical sockets as possible
3: use Gunk to get the worst of the grime off, agitate if stubborn grime
4: gently rinse off the gunk, do not use a power washer!!!
5: use APC at 4:1 ratio and again agitate
6: again rinse
7: pat dry with microfibre cloth
8: spray with 303, gently wipe for matt finish, or leave for 6 hours for gloss finish
9: do the same for the plastic trim covers

It takes time to do, but well worth it, nothing like an engine that you can eat your dinner off!!

When the rain stops I will take some shots of my engine bay.

There are plenty of detaling forums that will show what can be achieved.

 

Be careful u don't lose the plastic grommet that fixes the small plastic cover which denotes engine size.

I found using a leaf blower great tool to dry engine completely.

J

 

1. Wash car.
2. Lift hood
3. Spray clean
4.Close hood
5. Drive off.

I wash (with a power washer even) the engine of ALL my cars EVERYTIME I wash the cars.

I know several engineers at car manufacturers. The engine bay is considered a "wet compartment" Things in the engine bay, including all the plugs, are designed to get "wet"
If you have a running issue after washing your engine, you have a bad part that isn't sealing correctly.

Dirt and oil eat away at seals and trap heat in engine components. I've run several cars upwards of 300K miles and one of the best ways to get it there is to keep it clean!

(no pictures of the CTT, so here is the Audi)

My 2000 Audi S4 with 168K miles on it.