Canister Purge Control Valve: Testing and Inspection

Checking the EVAP Canister Purge Valve





Tool:
- Pressure/vacuum pump 30 14 883

LH 2.4, 2.4.1, 2.4.2

1 Disconnect the hose from the purge valve at the intake manifold. Connect pressure/vacuum pump 30 14 883.

2 Pump up the pressure. The non-return valve for the turbo pressure should seal.

3 Build up negative pressure. The purge valve should be:

Open with ignition switched off Closed with ignition switched on

4 If it is not, check the hose. If it is OK, change the purge valve.


LH 2.2

1 Disconnect both hoses from the purge valve at the intake manifold.

Pump up pressure in both hoses simultaneously. The valve should be airtight.

2 Build up negative pressure in the thick hose. The valve should be airtight.

3 Build up negative pressure in the thin hose. The valve should now be open to vacuum in the intake manifold (through the thick hose).

4 If it is not, inspect the hoses. If they are OK, change the EVAP canister with purge valve.