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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1446 (Engine Control System - 4.2L - Troubleshooting & Diagnosis) >> Diagnosis Information & Procedures >> Poor Fuel Fill Quality

Poor Fuel Fill Quality

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2004 Oldsmobile Bravada, 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 GMC Envoy, and 2004 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
Poor Fuel Fill Quality

Conditions Causes
Difficult to fill
  • Check valve stuck closed
  • 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 ON
Over fill
  • Pressure relief valve in fill limiter vent valve stuck open
  • Pressure relief valve in fill limiter vent valve is leaking
  • Fill limiter vent valve stuck open
  • Fill limiter vent valve is leaking
Premature 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 ON
Fuel Spitback
  • Check valve stuck open
  • Check valve stuck closed
  • Check valve leaking
  • High reid vapor pressure or high fuel temperature
Liquid to EVAP canister
  • Fill limiter vent valve stuck open
  • Fill limiter vent valve leaking
Liquid leak to ground
  • Pressure relief valve in fill limiter vent valve stuck open, or leaking
  • Fuel filler hose loose or torn
  • Fill limiter vent valve stuck open
Fuel Odor
  • Pressure relief in fuel limiter vent valve stuck open, or leaking
  • Saturated EVAP canister