Fuel supply system, petrol engines

Chapter overview

• Technical data
  1
• 1 Safety information
  1
• 1.1 Safety regulations for working on fuel supply
  1
• 1.3 Safety measures when working on vehicles with a start/stop system
  2
• 1.4 Safety precautions when working on vehicles with high-voltage system
  2
• 1.5 Safety precautions when working in the vicinity of high-voltage components
  3
• 2 Identification
  4
• 2.1 Engine number/engine data
  4
• 3 General information
  6
• 4 Repair notes
  7
• 4.1 Routing and attachment of lines
  7
• 4.2 General repair instructions
  7
• Fuel supply system
  8
• 1 Fuel
  8
• 1.1 Assembly overview - fuel tank
  8
• 1.2 Emptying fuel tank
  13
• 1.3 Removing and installing fuel tank
  24
• 2 Fuel delivery unit, fuel gauge sender
  29
• 2.1 Assembly overview - fuel delivery unit/fuel gauge sender
  29
• 2.2 Removing and installing fuel delivery unit, fuel gauge sender
  33
• 2.3 Removing and installing fuel gauge sender G
  43
• 3 Lines
  45
• 3.1 Removing and installing fuel lines
  45
• 4 Plug-in connectors
  49
• 4.1 Separating plug-in connectors
  49
• 5 Fuel filter
  53
• 5.1 Assembly overview - fuel filter
  53
• 5.2 Removing and installing fuel filter
  54
• 6 Activated charcoal filter system
  56
• 6.1 Connection diagram - activated charcoal filter system
  56
• 6.2 Assembly overview – activated charcoal filter system
  59
• 6.3 Assembly overview - diagnostic pump
  63
• 6.4 Removing and installing fuel system diagnosis pump
  64
• 6.5 Removing and installing activated charcoal filter
  65
• 6.6 Checking fuel tank breather
  65
• 6.7 Checking fuel system for leaks
  70
• 7 Accelerator pedal
  74
• 7.1 Assembly overview - accelerator module
  74
• 7.2 Removing and installing accelerator module with accelerator position sender G79 / G185
  74
• 8 Fuel pump
  77
• 8.1 Checking fuel system pressurisation pump G6
  77