Hello,
as we know, sim is sometimes in very strange temp behavior so in case this is observed, do restart of sim. To me not exactly this problem, never had fuel problems but with GNS530. Solution worked to me after 3 restarts of sim 
Hello,
as we know, sim is sometimes in very strange temp behavior so in case this is observed, do restart of sim. To me not exactly this problem, never had fuel problems but with GNS530. Solution worked to me after 3 restarts of sim