Fuel supply system, petrol engines

Chapter overview

• Technical data
  1
• 1 Identification
  1
• 1.1 Engine number/engine data
  1
• 2 General notes
  2
• 2.1 Rules for cleanliness when working on auxiliary heater and fuel system
  2
• 3 Safety information
  3
• 3.1 Safety regulations for working on fuel supply
  3
• 3.2 Safety measures when working on vehicles with start/stop system
  3
• 3.4 Safety precautions when working on exhaust system
  4
• 4 Repair instructions
  5
• 4.1 General repair notes
  5
• 4.2 Routing and attachment of lines
  5
• Fuel supply system
  6
• 1 Procedure in event of misfuelling
  6
• 2 Fuel
  8
• 2.1 Assembly overview - fuel tank
  8
• 2.2 Emptying fuel tank
  11
• 2.3 Removing and installing fuel tank
  14
• 3 Fuel delivery unit, fuel gauge sender
  19
• 3.1 Assembly overview - fuel delivery unit/fuel gauge sender
  19
• 3.2 Removing and installing fuel delivery unit, fuel gauge sender
  21
• 3.3 Removing and installing fuel gauge sender G
  25
• 4 Plug-in connectors
  27
• 4.1 Separating plug-in connectors
  27
• 5 Fuel filter
  33
• 5.1 Assembly overview – fuel filter
  33
• 5.2 Removing and installing fuel filter
  35
• 6 Activated charcoal filter system
  37
• 6.1 Assembly overview – activated charcoal filter system
  37
• 6.2 Removing and installing activated charcoal filter
  39
• 6.3 Checking fuel tank breather
  40
• 7 Accelerator pedal
  42
• 7.1 Assembly overview - accelerator module
  42
• 8 Fuel supply
  46
• 8.1 Checking fuel system pressurisation pump G6
  46
• 8.2 Removing and installing fuel pump control unit J538
  53