Do any of you guys ever use a pressure washer and some good soap/degreaser to clean your engine bay. Mine is getting really dirty, greasy, ect... and I don't want to hand scrub it because it would take about two years and wouldn't work as good as the pressure washer I have. Is there any harm to using a pressure washer? What important components should I cover up with ziplock bags or saran wrap? Any thoughts on how I should go about doing this? I don't want to do any damage, but I really like the look of a nice clean engine bay and I would like to do this myself with my pressure washer.