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
  4
• 4 Repair notes
  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 Removing and installing fuel tank
  14
• 1.3 Emptying fuel tank
  56
• 2 Fuel delivery unit, fuel gauge sender
  78
• 2.1 Assembly overview - fuel delivery unit/fuel gauge sender
  78
• 2.2 Removing and installing fuel delivery unit, fuel gauge sender
  84
• 2.3 Removing and installing fuel gauge sender G
  94
• 2.4 Removing and installing fuel gauge sender 2 G169
  96
• 2.5 Removing and installing assembly opening cover
  98
• 3 Lines
  101
• 3.1 Removing and installing fuel lines
  101
• 3.2 Removing and installing fuel line for auxiliary/supplementary heater
  105
• 4 Plug-in connectors
  109
• 4.1 Separating plug-in connectors
  109
• 5 Fuel filter
  115
• 6 Activated charcoal filter system
  116
• 6.1 Connection diagram - activated charcoal filter system
  116
• 6.2 Assembly overview – activated charcoal filter system
  118
• 6.3 Removing and installing activated charcoal filter
  121
• 6.4 Checking fuel tank breather
  123
• 6.5 Checking fuel system for leaks
  129
• 7 Accelerator pedal
  134
• 7.1 Assembly overview - accelerator module
  134
• 8 Fuel pump
  136
• 8.1 Checking fuel system pressurisation pump G6
  136
• 8.2 Removing and installing fuel pump control unit J538
  187
• 8.3 Removing and installing suction-jet pump
  189
• 9 Senders and sensors
  191
• 9.1 Removing and installing tank pressure sensor G400
  191
• 9.2 Removing and installing control unit for fuel tank leak detection J909
  192
• 9.3 Assembly overview - fuel quality sender G446
  193
• 9.4 Removing and installing fuel quality sender G446
  194