Symptoms of Failure of Evaporative Emissions Canister in Your Vehicle

By | September 3, 2014

What is an evaporative emissions canister
The main function of emission of vapor control system is to ensure fuel vapors are not released into the atmosphere. The emission control system often used in combination with fuel return lines in some vehicles. The emission control system limit the discharge of toxic gases from the engine and other components. There are three main sources of these gases: the engine exhaust, the crankcase, and the fuel tank and fuel ignition system

Where does evaporative emissions canister locatedfuel pump replacement
The evaporative emission canister is located near the engine. Its location changes depending upon the vehicle’s model/make. The emission vapor control unit ensures correct amount of fuel is supplied to the engine. If excess fuel is sent to the engine, the emission control unit sends it back to the fuel tank, and toxic vapors are not allowed to escape from the system.

Symptoms of failure of emission canister
Failure emission test
The emission canister valve will clog and prevent the use of the fuel vapors. These fuel vapors will not get sent back into the emissions control system, leading vehicle to failing emissions test.
The toxic gases are released through the exhaust, causing the vehicle to fail the emissions test.

Blown gaskets
If the canister valve fails, pressure builds in the emissions systems causing the gaskets to blow open.
Damaged gaskets will leak oil into the engine and engine compartment.
This pressure is very high and even breaks the tight seal of the gaskets makes and cases oil leak.

How to replace the evaporative emissions canister

  • First, turn off the engine and locate the emission canister in your vehicle.
  • If your finding difficulty in locating emission canister go through the owners manual and find the location of the emission canister.
  • Raise the vehicle above the ground level through a screw jack.
  • Remove the bolts that are attached to the Evaporative Emissions (EVAP) canister .
  • Disconnect the vapor hoses from the emission canister.
  • Remove the canister from the bracket.
  • Disconnect the vacuum hose from the EVAP shut valve.fuel pump replacement
  • Remove the fasteners that hold the EVAP shut the valve of the canister.
  • Remove the EVAP control shut valve from the canister.
  • Install the emission canister valve, control shunt valve.
  • Install the emission canister to the bracket system.
  • Connect all vacuum hoses that you unscrewed before.
  • Make sure that all the connection are fastened.
  • After connecting start the vehicle and test whether the emission canister working properly are not.