Fuel supply system, petrol engines

Chapter overview

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety measures when working on fuel supply
  1
• 1.3 Safety precautions when working on vehicles with a start/stop system
  2
• 2 Identification
  3
• 2.1 Engine number/engine data
  3
• 3 General information
  4
• 4 Repair instructions
  5
• 4.1 Routing and attachment of lines
  5
• 4.2 General repair instructions
  5
• Fuel supply system
  6
• 1 Fuel
  6
• 1.1 Assembly overview - fuel tank
  6
• 1.2 Emptying fuel tank
  8
• 1.3 Removing and installing fuel tank
  13
• 2 Fuel delivery unit, fuel gauge sender
  19
• 2.1 Assembly overview - fuel delivery unit/fuel gauge sender
  19
• 2.2 Removing and installing fuel delivery unit, fuel gauge sender
  21
• 3 Plug-in connectors
  28
• 3.1 Separating plug-in connectors
  28
• 4 Fuel filter
  32
• 5 Activated charcoal filter with fuel tank leak detection
  33
• 5.1 Assembly overview – activated charcoal filter system
  33
• 5.2 Removing and installing activated charcoal filter
  34
• 5.3 Checking fuel system for leaks
  34
• 5.4 Checking vacuum supply of fuel system diagnostic pump V144
  37
• 6 Activated charcoal filter without fuel tank leak detection
  39
• 6.1 Assembly overview – activated charcoal filter system
  39
• 6.2 Removing and installing activated charcoal filter
  39
• 6.3 Checking fuel tank breather
  40
• 7 Accelerator pedal
  43
• 7.1 Assembly overview - accelerator module
  43
• 7.2 Removing and installing accelerator pedal module GX2
  43
• 8 Fuel pump
  46
• 8.1 Checking fuel system pressurisation pump G6
  46
• 8.2 Removing and installing fuel pump control unit J538
  64
• 8.3 Removing and installing suction-jet pump
  66
• 9 Senders and sensors
  69
• 9.1 Removing and installing fuel gauge sender
  69