GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2000 🢒 Firefly (Canada) 🢒 Engine 🢒 Engine Controls - 1.0L 🢒 Poor Fuel Fill Quality

Concern

Causes

DEFINITION: Difficulty in refueling the vehicle.

Difficult to fill
    • 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 vapor lines
    • Fuel with high Reid Vapor Pressure characteristics
    • High fuel temperatures
    • The fuel filler hose or the pipe is pinched, is kinked, or is blocked.

Over-fill
    • 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 fill limiter vent valve is stuck open.
    • The fill limiter vent valve is leaking.

Premature shut-off of the fuel-dispensing nozzle
    • The fill limiter vent valve is stuck closed.
    • A restricted EVAP canister
    • A stuck-closed EVAP-canister vent solenoid.
    • Restricted fuel vapor lines
    • Fuel with high Reid Vapor Pressure characteristics
    • High fuel temperatures

Fuel Backflow
    • The check valve is stuck open.
    • The check valve is stuck closed.
    • The check valve is leaking.
    • Fuel with high Reid Vapor Pressure characteristics
    • High fuel temperatures

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.
    • A torn fuel filler hose or a loose fuel filler hose
    • The fill limiter vent valve is stuck open.

Fuel Odor
    • Pressure relief in the fuel limiter vent valve stuck open.
    • The pressure relief valve in the fill limiter vent valve is leaking.
    • A fuel-saturated EVAP canister