Had a good drive out in the roadster on Tuesday making the most of the nice weather. Today, I hear a faint noise hissing noise coming from the fuel cap. Thus stopped after I opened the fuel cap and the familiar whooshing sound. I've never heard thus hissing before, but it was really faint. There also seemed to be a whiff of fuel before I opened the cap, although not particularly strong. I understand that the fuel system might be pressurised, but don't know how this works. I'm guessing u need a new seal, but is this an urgent job, and are there any problems that this can cause? It had been approximately 24 hours between the drive and discovery of the hiss.
Thanks
