Why do I hear a little crackling noise coming from under the hood after the car has been shut off?

Asked by May 30, 2008 at 11:22 PM about the 2003 Mercedes-Benz S-Class S 430

Question type: Maintenance & Repair

3 Answers

just a hot engine after you shut it down,nothing to worry about,nothing is wrong.what you here is the exhaust.

3,375

The exhaust is cooling down. No worries, most cars do it.

145

Not just the exhaust, but also the engine in total and especially the manifold. When cooling down, the part that got hot, are "cracking" or rather giving you this "tic tic" sound. It's just metal cooling down.

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