Fuel cap pressure

[mattye]

Hi all,

I've noticed that when I open the fuel cap that there is quite a loud hiss (not a small sound)  as if the fuel tank is pressurised.

Does anyone else get this and is it normal.

Cheers

[Rusty]

No ... I am afraid I don't ... anyone else ?

[patrick]

Nor me!

[100milesaway]

I've not heard of this before so no it's not normal.

[Mogster]

sounds like the tank vent is blocked  :(

[zedmeister]

sounds like the tank vent is blocked 

+ 1

Check the routing of the breathers and check the vent end is not blocked -- have you been working around the tank area ???

Just a thought -- does it happen when the fuel is at all levels or when the tank is low

[Kwikasfuki]

Yup, sounds like tank vent.

If you're going to remove the tank to figure it out, make sure you torque the nuts properly. Otherwise I can see the next thread being "fuel cap ok, getting annoying vibration"  :) 

[Winston Smith]

Mine often does that - Thought it was normal!