dont know if anyone can help im working on a l reg renault espace, smelling of petrol only when the windows r open ive checked underneath and engine bay but no leaks ... its bafling me please help;;

dont know if anyone can help im working on a l reg renault espace, smelling of petrol only when the windows r open ive checked underneath and engine bay but no leaks ... its bafling me please help;;
hi have you checked condition of the rubber seal on fuel entry as these perish and dont seal 100% and let out fumes, good luck rob.