How does vapor canister vent valve work?
When the engine is running, the fuel vapors are purged from the canister and burned in the engine. The vent control valve (solenoid), or simply vent valve controls the flow of outside air in and out of the charcoal canister. It closes when the engine computer tests the EVAP system for leaks.
What does an EVAP canister vent control valve do?
What Does an EVAP Canister Vent Control Valve Do? The Evaporative Emission Control System (EVAP) keeps fuel vapors from leaking into the atmosphere by collecting and storing the vapors in a canister filled with carbon pellets.
How does the vapor canister purge valve work?
The Evaporative Emission Control system features a vapor canister purge valve which manages the quantity of fuel vapor coming out of the charcoal canister. The purge valve used to be controlled with a vacuum but now, newer cars allow the engine control unit to electronically control it.
How much charcoal is in an EVAP canister?
The canister stores about 2 lb. of activated charcoal used to store and contain fuel vapors until your purge valves open up and allow the engine intake’s vacuum to absorb some fuel vapors from the charcoal into the intake manifold of your engine. This is done to reduce gas emissions from your vehicle.
Where does the fuel go in an EVAP canister?
Your EVAP canister can hold a high amount of fuel vapor when your vehicle is in good shape and operating at high efficiency. The fuel vapor goes into your engine to get burnt. This process is termed ‘purging,’ which needs to be assisted by the purge valve.
Where is the vapor canister located on a vehicle?
Finding and removing the old canister The location of the vapor canister varies from one vehicle to another, although it is often located near the fuel tank. Once you’ve found the canister, pull out the hoses that attach it to the fuel tank.
What are the symptoms of a bad EVAP canister?
Symptoms of a Bad or Failing Evaporative Emission Control Canister. Common signs include the Check Engine Light coming on, raw fuel smell coming from the back of the car, and a collapsed or leaking fuel tank.
What does the EVAP canister actually do?
A charcoal canister or EVAP is an essential part of a vehicle . Every vehicle has a fuel tank that emits a flammable gas vapor. When the vehicle is in action, the temperature will rise and its fuel will evaporate then become vapor.
Where is the EVAP vent valve?
The EVAP Purge valve, on your vehicle, is located in the engine compartment. Yours is on the top of the front-right side (passenger side) of the engine. Just in case you need to know where the EVAP Vent valve/solenoid is located, it is underneath.