I am trying to clean the engine bay of my 2002 Ford Focus SE, which is really grimy thanks to years of neglect, and a valve cover gasket leak that I recently fixed.
I have been reading about how to clean engines properly, but am seeing some conflicting info. Some people are just spraying degreaser, and then using a brush and garden hose to clean. Others say that it's super important to cover all electrical components with plastic.
My questions are:
1) Which engine components besides the alternator, electrical connections, and battery do I need to protect from water? Are there any mechanical components that need to be protected or plugged off? I was just going to duct tape some plastic grocery bags around things to keep them dry. Does that sound adequate or is there a better way?
2) How long should I let it dry before driving it?
3) Any other tips for cleaning that will minimize the risk of damage?