Bleed The Fuel Supply Line To The Metering Pump
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NOTE:
After working on the fuel delivery unit, bleed the fuel supply line for the metering pump on vehicles with a parking heater.
Special tools and workshop equipment required
- Suction Pump VAS5226
- Hand Vacuum Pump VAS6213
Procedure
- Parking heater switched off.
-- Connect the Suction Pump VAS5226 to the compressed air.
-- Remove the fuel supply line -2- from the fuel tank at the metering pump -1-.
-- Connect the Suction Pump VAS5226 with the adapter from the Hand Vacuum Pump VAS6213 to the fuel supply line and bleed it by extracting briefly.
-- Install the fuel supply line to the metering pump.
-- Switch the parking heater on and let it run approximately 10 minutes at full throttle.