Fuel Injection System - BOSCH LH (Turbo)

• Trouble Shooting
  • Preliminary Checks
    • Notes
    • Engine Does Not Start
    • Poor Cold Starting
    • Surge During Engine Braking
    • High fuel consumption
    • Rough Running (All engine speeds)
    • Rough Idle
    • Low top speed poor performance
• Fuel System Inspection
  • Fuses
  • Connectors & Ground Connections
  • Air Leakage & Throttle Switch
    • Check Inlet System For Leakage
    • Throttle Switch
  • Fuel Pump, Tank Pump
    • Fuel Pump, Tank Pump Check
    • If neither pump operates
    • Main fuel pump does not operate
    • Tank pump does not operate
  • Line Pressure, Regulator
    • Notes
    • Measure line pressure
    • Line pressure is too high
    • Line pressure is too low.
    • Check pressure regulator
    • Charge air overpressure switch
  • Components/Wiring
    • Notes
    • Check ground connections
    • Check Lambda-sond shielding wires
    • Check that test point is not grounded
    • Check engine speed signal from ignition system control unit
    • Check voltage supply
  • Main Relay
  • Pump Relay
  • Injectors & Ballast Resistors
  • Air Control Valve
    • Notes
    • Check preheating resistor in Lamda-sond
  • Coolant Temperature Sensor
    • Notes
    • Check Throttle Switch
    • Check Transmission Switch
  • Mass Airflow Meter
    • Notes
    • CO-Adjustment Screw
    • Air Mass Meter Output
    • Burn Off Function
    • Assemble Connector
  • Lambda-SOND
    • Notes
    • Check/adjust CO content
• Ignition Setting, Idle Speed, Co Content Check & Adjustment
  • Description
  • Co Meter
  • Co-Checking Using Test Diode 999 5280-6
• Injectors, Quick Check
• Injectors, Fuel Injection Manifold & Pressure Regulator
  • Removal & Installation
• Air Valve, Quick Check
  • Idle Speed Check
  • Idle Speed Adjust
• Wiring Diagrams