So im not sure if im right but im probably gonna remove it anyways today, this morning i started my truck and when i came out i noticed it was making a very light knocking sound coming from the turbo side of the engine, it sounds like its coming from the accessory section and im wondering if when a vacuum pumo goes if it sounds like that. sound cant really be heard from the cab so i doubt its engine, oil pressure and all is fine. only other thought is exhuast leak. any insite would be appretiated.

 

one way fine out if it coming from the accessory to remove belt start the engine see if gone away

 

ya i pulled the pump and its all good dont need that anyways