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– Connect the Pressure Tester Kit - Hose 2 - VAS6550/2- be‐ tween the fuel line from the fuel tank and the shut-off valve -B- on the Pressure Tester Kit - VAS6550- . – Connect the Pressure Tester Kit - Hose 1 - VAS6550/1- be‐ tween the fuel line leading to the engine -1- and the shut-off valve -A- on the Pressure Tester Kit - VAS6550- . Test sequence: Note ♦ The fuel pump is now activated to build up the fuel pressure. ♦ If the output diagnostic test mode is performed several times in succession, it may be necessary to briefly start the motor before repeating the output diagnostic test mode. – Read the fuel pressure on the pressure gauge. ter 10 minutes the pressure must not drop more than approx‐ imately 1 bar. If the pressure drops: |