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Home >> Saturn >> 2004 >> Ion Red Line >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls (Troubleshooting & Diagnosis) >> Troubleshooting >> Poor Fuel Fill Quality

Poor Fuel Fill Quality

Poor Fuel Fill Quality

Problem Causes
Definition: During the fueling process a continual, occasional or no fuel nozzle shut-off condition has occurred.
Difficult to fill
  • Fill limiter vent valve stuck closed
  • evaporative emission (EVAP) canister restricted
  • EVAP vent valve stuck closed
  • Restricted vapor lines
  • High reid vapor pressure or high fuel temperature
  • Fuel filler hose is pinched or kinked
  • Ignition switch ON (Vent Valve Closed)
Over fill
  • Pressure relief valve is stuck open or leaking
  • Fill limiter vent valve stuck open or leaking
Pre-mature shut-off of the fuel dispensing nozzle
  • Fill limiter vent valve stuck closed
  • EVAP canister restricted
  • EVAP vent valve stuck closed
  • Restricted vapor lines
  • High reid vapor pressure or high fuel temperature
  • Ignition switch ON (EVAP vent valve closed)
Fuel Spitback
  • Restricted EVAP canister
  • High reid vapor pressure or high fuel temperature
  • Ignition switch ON (EVAP vent valve closed)