It can be done but its a pain.Remove everything you can from the engine bay.Radiator,wiring,washer bottle,wiper motor etc.I did it one time and the engine bay looked better than most cars I saw at the big car shows.I took everthing I could off the motor and painted it first.Then I wrapped the motor with plastic and a sheet.Then I removed everything I possibly could from the engine bay and primered and painted it.
