I’ve been hearing a metal clanking sound from under the hood.
Nothing is loose and the fan is not vibrating.
First I only heard it when going over 60 mph. Now I hear it some when idling and cranking.
It doesn’t affect the drivability of the car at all.
If it’s the timing chain would I hear it when starting the engine?
Determine if it makes the noise when the engine is under load or when coasting. That will help a qualified mechanic identify the specific parts involved.