sebring boxster

Does any know the name of the black cap on the driverside valve cover in the front with a black vent line? i have a leak there? does that have a gasket could a remove the cap?

99firehawk

that is the oil seperator, you need a new valve cover. are you sure its leaking? how?

sebring boxster

leaks around the edge of the blk cap hissing sound

99firehawk

Not to sound like an a$$.................could you please give me a desciption of the car, and the symptoms. I have never seen/heard of one with an external leak..........

sebring boxster

Is 2004 s 4.5 v8 is a hising sound like air scaping not a sucking sound while idle also the idle is very low after warming up the hissing goes down replacing the valve cover is expensive I guess i am going to have to drive to the dealer for more information so far no codes from the computer

99firehawk

Imguessing your noise is normal they all idle like that , have you had any work done recently ? Does the car drive normaly?

sebring boxster

no work done yesterday after driving for 1 hr i am getting codes p1182,0507,0021,2187,2189 do you know pcv valve location or the oil separator for the v8

99firehawk

first thing I would check would be the oil fill cap, is on properly and tight. theres not a lot of places for a cayenne s to have a vacum leak, but you may hear it manifest itself through the oil sperator.
check the intake make sure it is tight to the throttle body. Then there is a big vacum line on the pass rear of the intake for the brake booster.
You can use a propane torch to find a vacum leak, turn it on do not light it and run it around all possible leak areas with the car at idle if the idel speeds up you have found your leak

sebring boxster

thank you i will check the line the oil cap is tight no leaks there also the intake hose i will use the propane next.