Clean Working Conditions

Even Very Small Particles of Dirt Can Cause a Fault. Observe the following Guidelines for Cleanliness When Working on the Fuel System, Injection System and Turbocharger:

• Before loosening, the connection points and surrounding areas must be cleaned thoroughly with engine or brake cleaner, and then cleaned area must be dried completely.
• Seal off any open lines and connections immediately with clean plugs, for example, taken from Engine Bung Set VAS6122.
• Place removed parts on a clean surface and cover them with lint-free cloths.
• Carefully cover or seal opened components if repairs are 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 out of their original packaging (for example, in tool boxes etc.).
• If system is open, do not work with compressed air and do not move the vehicle.
• Make sure no fuel gets onto the fuel hoses. If necessary, wipe off the fuel hoses immediately. Replace any corroded fuel hoses.
• Protect any disconnected connectors from dirt and moisture and connect them only when they are completely dry.