Here's what I did recently:
1. Buy a bottle of Simple Green automotive degreaser in the spray bottle.
2. Wait a few hours for the engine to cool down.
3. Spray down areas on the engine that are greasy. For me, this included: valve cover, air box (stock), turbo, exhaust-side of the block, exhaust manifold, fuel filter canister, fuel rail, power steering pump, and the injector pump.
4. Wait a minute or 2
5. Using a garden hose on a "medium misting spray", hose all those parts down.
6. Repeat as necessary.
Some interesting notes:
1. I did NOT cover any electrical connections, and although I sort of tried to stay away from spraying them directly, I really was not very careful at all and most of them got wet.
2. When I finished, I used a Shop Vac to suck up puddles of water that had accumulated in those big depressions around the outside of the stock air box. I also put some suction on the intake horn boot to be sure there were no puddles of water in it.
3. I did not attempt to restart the truck until the next morning when I left for work.
No problems at all, and I plan to do this more frequently now.
-Ryan
