Fuel Tank Pressure

[T-Burn]

Another newbie question....so please be gentle.

When I park up the T350 (especially after a 'spirited' run), there is a buzzing coming from the fuel tank, due to pressure. Usually I crack the filler cap slightly just to relieve the pressure (not too fast, otherwise you get a face full of Optimax ), and the buzzing stops.

I would expect it to remain pressurised to some extent, but is this normal? Or is there some sort of breather pipe that might be blocked?

[targarama]

TADTS. Like all modern cars the fuelling system is 'closed loop'. They quieten down after 20-30 minutes (depending on heat/pressure). Sometimes I open mine slowly, let the pressure out, close it and come back a few minutes later and its buzzing again.

[T-Burn]

Thanks for the reply.........good to know it's not just me!

[targarama]

BTW, when I say TADTS I mean all TVR. I have no clue why TVR can't build the fuel system to work like a 'normal' car. You don't hear Porsches and Ferraris buzzing like this.

[Nish]

Phew! I was about to get very worried about this myself.

So is it advisable to open the filler cap a little to relieve the pressure?

Or will it be fine left sitting there buzzing?