ok so as of yesterday any time i start the car it takes a little longer than normal 2 start and just before it does it makes a really loud "hissing" noise! i had some else crank it while i leaned in the engine bay and best i can tell it seems to be towards the rear of the bay near the tranny on the oil filter side . it sound almost exactly like when u hand turn over a keg with no exhaust, that loud quick sound of rushing air. anybody got any clue where i should even start looking for the problem?

also seams as tho the starter is not engaging properly