I recently had to pull over because of a strong smell of petrol in the cabin. Car was under load- full car, towing boat, up a windy road and 35degree plus day. Like one of the previous posts the smell seemed stronger when the air was on recirc. Nothing obvious around engine or fuel spills drips etc. When I released the fuel cap there seemed to be a lot of pressure build up. I would appreciate any suggestions as to where I should start. Cheers