Fuel Supply, Injection System And Charging System Clean Working Conditions

Even minor contamination can lead to malfunctions in the fuel injection system. Therefore when working on the fuel supply, the injection system and on the turbocharger, pay careful attention to the following rules of cleanliness:

• Before loosening, connections and surrounding areas must be cleaned thoroughly with engine or brake cleaner, and then cleaned area must be dried completely.
• Immediately seal off any open lines and connections with clean plugs, for example, taken from the Engine Bung Set VAS6122.
• Place the removed parts on a clean surface and cover them. Only use lint-free cloths!
• Carefully cover or seal opened components if the repair is not performed immediately.
• Install only clean parts: remove the replacement parts from their packaging just before installing them. Do not use parts that have been stored unpacked (for example in tool boxes etc.).
• If the system is open: do not work with compressed air. If possible do not move vehicle.
• Protect any disconnected connectors from dirt and moisture and connect them only when they are completely dry.