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Discussion Starter · #1 ·
When I unscrew the filler cap there's a hissing sound which is either caused by a vacuum in the tank (and the air is rushing in) or pressure in the tank (air is rushing out). I can't tell which it is.

Is this normal or do I have a blocked breather somewhere? :surprise:

The car is performing perfectly, but I don't want to strain the fuel pump.

Anyone else have this?
 
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