I dont know enough technical english to explain it in a good way...
But, it is a valve mounted on the intake on the rivers side in the engine..

It controls the "things" that regulate how much air is being sucked into the combustion section...

Thats if i have understood it correctly..

As other things on the X, they are proned to fail, making a rattling sound...




Does anyone know if it is critically to have it replaced.?

IS there anything that can loosen, and be sucked into the engine.?