Checking Double Check-Valve

Checking Double Check-Valve

Special tools, testers and auxiliary items required







- Hand vacuum pump VAS 6213







- Disconnect connectors from Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 and Low Fuel Pressure Sensor G410 - arrows -.
- Pull off Evaporative Emission (EVAP) Canister Purge Regulator Valve N80 - B - from hose - A -.







- Set slide ring - 1 - on hand vacuum pump VAS 6213 to position - A - for "vacuum".







- Connect Hand vacuum pump VAS 6213 on hose to double check-valve - arrow
- Operate hand vacuum pump VAS 6213 several times, vacuum must build up.
If no vacuum builds up, replace double check-valve.