i was looking around under my hood today cause my car started making a new noise. sounded like sucking. occured above 4000rpm, accelerating in gear, holding revs in gear, or holding revs out of gear, same level of sucking in all cases. also i was revving the enigne under the hood and noticed my one of the aux ports opening(the other one was stuck open for some reason, it's returned to closed but seems extremely hard to move by hand, but it is movable, i'm thinking actuator but i still wanna hear what ya'll think) just from a sharp jab of the throttle. would that seem to indicate to any of you that i have an exhaust restriction??? any thoughts on that sucking sound would be very nice.

 

clean your actuators

 

how?