Im hearing some valve tapping after i switched to synthetic oil same weight and viscosity i did have a hydrolocking incident a few weeks back idk if thats related i havent gotten any check engine lights but its something thats bugging me any advice would be nice thanks. I have a tsx v6 it sounds like valve tapping it might be something else

 

your hydrolocking incident might have something to do with it. i'd get it checked out.

 

That kinda like saying "I have this strange headache, but I am not sure if its because I just had my F^({iNG head beat in with a hammer"