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Moaning/whistling sound from gas filler compartment


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I have a Moaning/whistling sound coming from the gas filler compartment, I have no clue what it is, has anybody heard of this? I have a 2003 Boxster S

Thanks

Sounds like the On-board Fuel Vapor Recovery system (ORVR) . There is a vent tube (to the right of the gas cap when you open the gas filler compartment) that is designed to suck gas fumes into the EVAP canister (I believe?) while refueling.

This thread mentions the same symptoms and suggest the fix is a new carbon control valve, part 996 605 213 01:

http://www.renntech.org/forums/index.php?showtopic=6332

Here is a thread about removing the EVAP (carbon) canister.

http://www.renntech.org/forums/index.php?showtopic=13955

Atle

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As suggested by other owners, I put a small piece of foam rubber in the opening and it dampened the sound to the point it cannot be heard. A lot less expensive than replacing the valve.

Henry Jay

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