What is the best way to clean the engine area at home. I'd like to avoid damaging the electrical system or other components present.

  • You can spray newer cars' engine bays. What kind of car are we talking about?
    – Nick
    Commented Feb 21, 2013 at 12:44
  • The car in question is 25 yrs. old, but a general answer would be okay as well.
    – ipavlic
    Commented Feb 21, 2013 at 13:15

2 Answers 2


If it's a relatively older car and you want to take care not to get water where you don't want it, just get yourself a roll of those blue automotive grade paper towels and a bottle of simple green ( or a similarly gentle cleaner ) and take an afternoon to wipe down your engine bay. That way it will be easy to avoid damaging any wires. Sure, it doesn't sound as fast as just hosing things down, but your engine will thank you for it.


Steam cleaning is effective for older cars, but does require manual wiping down afterwards, and car taken around the fuse box or other electrical items in the engine bay.

Take extra care with the distributor as high pressure steam could get inside it and condense.

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