-mr. billStop filling the tank after the fuel nozzle automatically clicks off. Do not try to ‘‘top off’’ the tank. Leave some room for the fuel to expand with temperature changes.
If the fuel nozzle keeps clicking off even though the tank is not full, there may be a problem with your vehicle’s fuel vapor recovery system. The system helps keep fuel vapors from going into the atmosphere. Try filling at another pump. If this does not fix the problem, consult your dealer.
Cost you about $500 to replace your evaporative emissions system. I had a Maxima once that had to have its cannister and whatever else replaced for this kind of money. Seems that's a lot for a container of charcoal, but that was what the stealer wanted.what would topping it off do ?