986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Blowing over the top of a Coke bottle sound

spongebob · 09-28-2019, 11:56 AM

Had this sound some years ago, replacing the valves did not solve it. My fix was to put a piece of sponge in the hole in front of fuel filler cap.
Still allows for ventilation but will stop the sound

09-28-2019, 11:56 AM	#3
spongebob Registered User Join Date: Aug 2006 Location: Sweden Posts: 116	Had this sound some years ago, replacing the valves did not solve it. My fix was to put a piece of sponge in the hole in front of fuel filler cap. Still allows for ventilation but will stop the sound