So for the last week or so my Accord has been making a buzzing noise. I recently installed a new NAPA PCV valve, and when I pinch the tube going to the PCV valve the noise stops, let go of the tube the noise resumes. The noise is coming from the timing chain area, so i really hope its not that. I ordered a Honda OEM PCV valve from Bernardi Honda so when it comes in I will install it and pray the noise stops. Anyone ever experience this? Does this sound like it could be the timing chain, or is it possible the pcv valve would cause this buzzing noise. Any other symptoms to look for if its chain related? Thanks!