I'm thinking about cleaning my engine because it's so extremely dirty (see pics below) and was wondering if you guys could give me any tips for doing so. A friend of mine's dad ruined his A/C cleaning the engine and I want to avoid any situations like that. I'm not extremely car savvy so if this is something that shouldn't be attempted by an amateur please tell me.
http://i22.photobucket.com/albums/b3...0/100_0535.jpg