You won't hurt it. Just cover your dist. up & if you have a all purpose cleaner or something that states engine gunk etc. Make sure motor off. Spray your degreaser let sit few minutes & also scrub any dirt you can get to then spray entire engine just water. Next start up car let run a few minutes then shut engine off. Wife off engine bay w/ towel/chammy etc.
You shoud be good 2 go. You can also use Armor All 2001. Something for vinnly/rubber.
No need to have detailed. Do it yourself. I need to redo all my vehicles.
Good Luck