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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1469 (Engine Control System - 4.8L, 5.3L, & 6.0L - Troubleshooting & Diagnosis) >> Diagnostic Information & Procedures >> Poor Fuel Fill Quality

Poor Fuel Fill Quality

WARNING: This page is about a different car, the 2004 GMC Envoy XUV, 2004 GMC Envoy XL, 2004 Chevrolet TrailBlazer, and 2004 Buick Rainier. However, it is still accessible from the selected car via links, so may be relevant.
Poor Fuel Fill Quality

Problem Causes
DEFINITION: Difficulty when refueling the vehicle.
Difficult to fill
  • The check valve is stuck closed.
  • The fill limiter vent valve is stuck closed.
  • The evaporative emission (EVAP) canister is restricted.
  • The EVAP canister vent solenoid is stuck closed.
  • Restricted EVAP pipes
  • High Reid vapor pressure
  • High fuel temperature
  • The fuel filler hose/pipe is pinched, kinked or blocked.
  • The fuel feed hose, or crossover hose, is pinched, kinked or blocked.
  • The ignition switch is ON.
Over fill
  • The pressure relief valve in the fill limiter vent valve is stuck open.
  • The pressure relief valve in the fill limiter vent is valve leaking.
  • The fill limiter vent valve is stuck open.
  • The fill limiter vent valve is leaking.
Premature shut-off of the fuel dispensing nozzle
  • The check valve is stuck closed.
  • The fill limiter vent valve is stuck closed.
  • The EVAP canister is restricted.
  • The EVAP canister vent solenoid is stuck closed.
  • Restricted EVAP pipes
  • High Reid vapor pressure
  • High fuel temperature
  • The fuel filler hose/pipe is pinched, kinked or blocked.
  • The fuel feed hose, or crossover hose, is pinched, kinked or blocked.
  • The ignition switch is ON.
Fuel spit back
  • The check valve is stuck open.
  • The check valve is stuck closed.
  • The check valve is leaking.
  • High Reid vapor pressure
  • High fuel temperature
Liquid fuel in the EVAP canister
  • The fill limiter vent valve is stuck open.
  • The fill limiter vent valve is leaking.
Liquid fuel leak
  • The pressure relief valve in the fill limiter vent valve is stuck open.
  • The pressure relief valve in the fill limiter vent valve is leaking.
  • The fuel filler hose is loose or torn.
  • The fuel feed hose, or crossover hose, is loose or torn.
  • The fill limiter vent valve is stuck open.
Fuel odor
  • The pressure relief valve in the fill limiter vent valve is stuck open.
  • The pressure relief valve in the fill limiter vent valve is leaking.
  • The EVAP canister is saturated.
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