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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1350 (Engine Control System (Troubleshooting & Diagnosis) -- 1.8L (LNK)) >> Troubleshooting >> Poor Fuel Fill Quality

Poor Fuel Fill Quality

WARNING: This page is about a different car, the 2004 Pontiac Vibe. However, it is still accessible from the selected car via links, so may be relevant.
Poor Fuel Fill Quality

Concern Causes
DEFINITION: Difficulty when refueling the vehicle.
Difficult to fill
  • The fuel filler pipe check valve is stuck closed.
  • The fill limiter vent valve (FLVV) is stuck closed.
  • The evaporative emission (EVAP) canister drain hose is blocked or restricted.
  • The EVAP canister drain line check ball is stuck closed.
  • Any restricted vapor lines or hoses
  • The EVAP canister is restricted.
  • A fuel with high reid vapor pressure characteristics.
  • A high fuel temperature
  • The fuel filler hose/pipe is pinched, kinked, or blocked.
Over fill
  • The pressure relief valve in the fill limiter vent valve (FLVV) is stuck open.
  • The pressure relief valve in the FLVV is leaking.
  • The FLVV is stuck open.
  • The FLVV is leaking.
Pre-mature shut-off of the fuel dispensing nozzle
  • The fill limiter vent valve (FLVV) is stuck closed.
  • The evaporative emission (EVAP) canister drain hose is blocked or restricted.
  • The EVAP canister drain line check ball is stuck closed.
  • Any restricted vapor lines or hoses
  • The EVAP canister is restricted.
  • A fuel with high reid vapor pressure characteristics
  • A high fuel temperature
Fuel spitback
  • The fuel filler pipe check valve is stuck open.
  • The filler pipe check valve is stuck closed.
  • The filler pipe check valve is leaking.
  • A fuel with high reid vapor pressure characteristics.
  • A 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 (FLVV) is stuck open.
  • The pressure relief valve in the FLVV is leaking.
  • The fuel filler hose is loose or torn.
  • The FLVV is stuck open.
Fuel odor
  • The pressure relief valve in the fuel limiter vent valve (FLVV) is stuck open.
  • The pressure relief valve in the FLVV is leaking.
  • The EVAP canister is saturated with fuel.
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