I have a J30 motor in my 02 accord v6. Recently I was under the hood and something was clicking. Its a module to the right of the engine, it has a tube from the throttle body to the module and another tube from the bottom of the module down below the body, and the bottom tube has a small black cylinder thing. Looks like a fuel filter. I know that there is only a fuel filter on the pump. The vehicle runs and idles fine but this module just clicks and when i hit the throttle it clicks faster and when hitting a higher rpm it stops and on its was down it hisses and then pops and goes back to clicking.
Thanks Brandon

 

Looks like the EVAP purge valve, which is supposed to cycle open-shut like you describe. I've never messed with a V-6 so I don't know whether it's supposed to be very loud? Maybe it gets louder with age or it's getting close to failure??

 

I took it to grease monkey and the guy said that it was the vacuum booster. Idk if he is right or not because the car and everything else runs just fine