I have 85 Mustang lx that I recently bought with 3.8l engine 107k miles. I have some hearing loss but it has a what I hear as a ticking noise that I'm having trouble locating. I can't hear it when standing in front of the car with the hood up, but I do hear it standing near the door. I have listened with a mechanics stethoscope and I hear it loudest when in contact with the exhaust just below the manifold. It doesn't seem to be an exhaust leak. The noise does increase with increased rpms but doesn't seem to be fast enough to be rod or bearing related to me but I'm not a mechanic. Any suggestions will be appreciated.
I have changed the oil and have good oil pressure and replaced a leaking water pump.
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