Hi All,
I have noticed when the engine is warm and after a long ish drive, there is a hissing noise coming from the serpentine belt/fuel filter area. After a careful listen it is either one of those two components. The fuel pump itself doesnt seem to be vibrating or unusually warm and the belt seems ok (no squeals or any oddities). Is this normal? there are no check engine lights, however I have noticed the car very rarely hesitates for a second when accelerating, so i'm not sure if it is a fuel issue.