I'm trying to identify this tapping noise I'm hearing. I tried everything from changing the oil, sea foaming the crankcase before an oil change, checking compression, running the car without the serpentine belt to check for pully issues, taking a rubber hose to try and identify the location. I can't figure this out. It sounds like its coming from the intake area of the car. This is driving me crazy. I'm about to check the oil pressure next but any advice is appreciated.