Maybe you've heard it before, The front end of my engine started getting loud, like the water pump cavitating. It got louder and louder, A few times I stuck my head under the hood and it sounds more like it's coming from where the passenger side cam pulley would be. Now, this all started after the valve tap noise returned. Maybe off a tooth on the cam? Bad pulley/bearing?

I haven't taken a wrench to it yet I'm waiting for garage access, I haven't opened any books yet, I'm just starting to speculate. In the meanwhile, it's been parked.

My plan is to take the intake off, look at the valve train and the water pump while I've time and access to it all.