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
• 2 Identification
  3
• 2.1 Engine number/engine data
  3
• 3 General information
  5
• 4 Repair instructions
  6
• 4.1 Routing and attachment of lines
  6
• 4.2 General repair instructions
  6
• Fuel supply system
  7
• 1 Fuel
  7
• 1.1 Assembly overview - fuel tank
  7
• 1.2 Emptying fuel tank
  8
• 1.3 Removing and installing fuel tank
  18
• 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
  30
• 2.3 Removing and installing fuel gauge sender G
  34
• 3 Wiring
  36
• 3.1 Removing and installing fuel lines
  36
• 4 Plug-in connectors
  40
• 4.1 Separating plug-in connectors
  40
• 5 Fuel filter
  44
• 5.1 Assembly overview - fuel filter
  44
• 5.2 Removing and installing fuel filter
  44
• 6 Activated charcoal filter system
  47
• 6.1 Connection diagram - activated charcoal filter
  47
• 6.2 Assembly overview - activated charcoal filter system
  48
• 6.3 Removing and installing fuel system diagnosis pump
  50
• 6.4 Removing and installing activated charcoal filter
  51
• 6.5 Checking fuel tank breather
  52
• 6.6 Checking fuel system for leaks
  55
• 7 Accelerator pedal
  60
• 7.1 Assembly overview - accelerator module
  60
• 7.2 Removing and installing accelerator module with accelerator position sender G79 / G185
  60
• 8 Fuel pump
  63
• 8.1 Checking fuel system pressurisation pump G6
  63