PWC fuel tank pressure?

[lokart]

So I went out and opened the fuel cap on my Yamaha FX and it was under high pressure, like a gas can setting out in the sun. I thought these tanks had vent tubes. I wonder if my tube is clogged? Anyone else have this or know of any of this.

 

[Neutron]

Both of my waverunners have pressure when opening the fuel cap if they sit for a while.

 

[1WetBoat]

Same here, pretty normal.

 

[lokart]

Thanks for the feedback. Wasn't too sure if it was normal or not.

 

[Betik]

Same here

 

[Troy JK]

There is a vent, but it has a check valve to only allow air in.