BC Drivers: Understanding the Bi-Level Purge Valve for Ford Vehicles

Also sometimes referred to as the canister valve, the Bi-Level Purge Valve is an important part of the evaporative emissions system.

This piece controls and limits the flow of vapour when the vehicle is idling. As the vapour is transported from the charcoal canister to the intake, this is the part that manages the process. In other words, it stops toxic fuel vapours from leaving the tank and escaping into the air outside. Failure of this particular valve is usually due to a malfunction with the operating solenoid - which can cause some issues that you’d rather avoid.

If yours is failing, the “Check Engine” may come on. This warning signal is typically triggered when an exceptionally high or low purge is detected. While it will not cause shaking, it can lead to poor fuel economy and performance issues.

The vehicle will need to use more fuel to produce the same amount of power if the vapours are not able to escape. This will reduce the overall efficiency. If the valve is stuck in an open position, it can cause a vacuum leak to form. This allows unpredictable levels of air to flow into the combustion chamber, which will cause a problem for the motor’s air-fuel ratio.

Contact Ford Parts BC to replace your purge valve now!