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 start/stop system
  2
• 2 Identification
  3
• 2.1 Engine number/engine data
  3
• 3 General information
  4
• 3.1 Rules for cleanliness when working on auxiliary heater and fuel system
  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 Removing and installing fuel tank
  12
• 1.3 Emptying fuel tank
  30
• 2 Fuel delivery unit, fuel gauge sender
  47
• 2.1 Assembly overview - fuel delivery unit/fuel gauge sender
  47
• 2.2 Removing and installing fuel delivery unit, fuel gauge sender
  58
• 2.3 Removing and installing fuel gauge sender G
  72
• 2.4 Removing and installing fuel gauge sender 2 G169
  73
• 2.5 Removing and installing assembly opening cover
  79
• 3 Plug-in connectors
  80
• 3.1 Separating plug-in connectors
  80
• 4 Fuel filter
  86
• 4.1 Assembly overview – fuel filter
  86
• 4.2 Removing and installing fuel filter
  87
• 5 Activated charcoal filter system
  89
• 5.1 Connection diagram - activated charcoal filter system
  89
• 5.2 Assembly overview – activated charcoal filter system
  90
• 5.3 Removing and installing activated charcoal filter
  92
• 5.4 Removing and installing fuel system diagnosis pump
  95
• 5.5 Removing and installing air filter for activated charcoal filter system
  95
• 5.6 Checking fuel tank breather
  96
• 5.7 Checking fuel system for leaks, vehicles with fuel tank leak diagnosis
  103
• 6 Accelerator pedal
  114
• 6.1 Assembly overview - accelerator module
  114
• 6.2 Removing and installing accelerator pedal module GX2
  114
• 7 Fuel supply
  116
• 7.1 Checking fuel system pressurisation pump G6
  116
• 7.2 Removing and installing suction-jet pump
  143
• 7.3 Removing and installing fuel pump control unit J538
  145
• 7.4 Checking suction-jet pump
  146
• 8 Senders and sensors
  148
• 8.1 Assembly overview - fuel quality sender
  148
• 8.2 Removing and installing fuel quality sender G446
  148
• 9 Lines
  151
• 9.1 Removing and installing fuel lines
  151