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sleepingboxster · 09-03-2016, 10:18 AM

Thanks. I just capped off the vent to see what would happen. Nothing seemed to change . The hiss was still there, maybe it's normal for the AOS to hiss. Before when I capped off the breather hose to the AOS The check engine light immediately went away. when I capped the vent it did not. Is the PCV a common failure spot, is the leaking from the pcv when it's not connected to the aos normal.

09-03-2016, 10:18 AM	#4
sleepingboxster Shave master Join Date: Jun 2016 Location: Utah Posts: 21	Thanks. I just capped off the vent to see what would happen. Nothing seemed to change . The hiss was still there, maybe it's normal for the AOS to hiss. Before when I capped off the breather hose to the AOS The check engine light immediately went away. when I capped the vent it did not. Is the PCV a common failure spot, is the leaking from the pcv when it's not connected to the aos normal.