Hi all, I'm hoping to solve a mystery. My new-to-me '11 Enclave has a loud ticking noise that I thought was a valve. After watching a few YouTube videos I learned it could be the fuel purge valve making the noise and that turned out to be the correct diagnosis. It was easy to test the valve...when I pulled the wiring harness out the ticking noise stops immediately. When I reconnect power to the valve it starts back up again. I was relieved to discover it's not a loud engine valve. HOWEVER....the new fuel purge valve arrived today from Rockauto and I can't believe it....same noise is occurring with the brand new valve installed. This cannot be a normal ticking noise, right? It's too loud in my opinion. Maybe I received a bad replacement valve? Is there another issue I'm not considering? Thanks in advance for any help you can provide me.