2005 Suzuki Verona Fuel tank issue

MIKEPEGASUS

MEMBER
2005 SUZUKI VERONA
6 CYL
FWD
AUTOMATIC
105,000 MILES

The problem is that the gas tank fills slowly and can only take a half a gallon before stopping. Is there something in the engine that needs to be adjusted? It almost seems as if it is filled with air and the air pressure is causing the gas not to enter the tank quickly. I can see the gas fill up in the hose when I fill up the gas tank, therefore causing the gas pump to shut off.

1 Reply

DAVE H

MECHANIC
13,383 POSTS

The basic Evaporative Emission (EVAP) control system used is the charcoal canister storage method. This method transfers fuel vapor from the fuel tank to an activated carbon (charcoal) storage canister which holds the vapors when the vehicle is not operating. When the engine is running, the fuel vapor is purged from the carbon element by intake airflow and consumed in the normal combustion process.
Gasoline vapors from the fuel tank flow into the tube labeled TANK. These vapors are absorbed into the carbon. The canister is purged by Engine Control Module (ECM) when the engine has been running for a specified amount of time. Air is drawn into the canister and mixed with the vapor. This mixture is then drawn into the intake manifold.
The ECM supplies a ground to energize the EVAP emission canister purge solenoid valve. This valve is Pulse Width Modulated (PWM) or turned on and off several times a second. The EVAP emission canister purge PWM duty cycle varies according to operating conditions determined by mass airflow, fuel trim, and intake air temperature.
Poor idle, stalling, and poor driveability can be caused by the following conditions:
An inoperative EVAP canister purge valve.
A damaged canister.
Hoses that are split, cracked, or not connected to the proper tubes.
Evaporative Emission Canister
The evaporative emission (EVAP) canister is an emission control device containing activated charcoal granules. The evaporative emission canister is used to store fuel vapors from the fuel tank. Once certain conditions are met, the Engine Control Module (ECM) activates the EVAP canister purge solenoid, allowing the fuel vapors to be drawn into the engine cylinders and burned.