Fuel injection L-Jetronic Mercedes E-Class (W123)
Description of the L-Jetronic fuel injection system
Fuel injection system "L-Jetronic" 1 - fuel tank; 2 - fuel pump; 3 - fuel filter; 4 - distribution main; 5 - pressure regulator; 6 - electronic control unit...
Fuel injection system "L-Jetronic" 1 - fuel tank; 2 - fuel pump; 3 - fuel filter; 4 - distribution main; 5 - pressure regulator; 6 - electronic control unit...
Checking the injectors
1. The serviceability of the injectors is best checked using the Bosch 6E84.100.202 control device in positions 6-10 of the program switch. If you do not have one, the...
1. The serviceability of the injectors is best checked using the Bosch 6E84.100.202 control device in positions 6-10 of the program switch. If you do not have one, the...
Adjusting engine idle speed
Using the mixture quantity adjusting screw, set the idle crankshaft speed within 900±50 rpm (when turning the screw clockwise the rotation speed decreases). At idle, the...
Using the mixture quantity adjusting screw, set the idle crankshaft speed within 900±50 rpm (when turning the screw clockwise the rotation speed decreases). At idle, the...
Checking the additional fuel supply valve
1. The valve should open fully when the coolant temperature is 20°C and close when it rises to 70°C. 2. To check the valve on a cold engine, remove the valve box and...
1. The valve should open fully when the coolant temperature is 20°C and close when it rises to 70°C. 2. To check the valve on a cold engine, remove the valve box and...
Checking the thermal valve
1. To check the condition of the thermal valve, disconnect the hose going to the vacuum regulator of the ignition distributor sensor, disconnect the hose from the tee...
1. To check the condition of the thermal valve, disconnect the hose going to the vacuum regulator of the ignition distributor sensor, disconnect the hose from the tee...
Checking the thermoelectric switch
1. Remove the air filter. 2. Turn on the ignition. As soon as the intake air temperature exceeds approximately 14°C, the switch should close and both its contacts should...
1. Remove the air filter. 2. Turn on the ignition. As soon as the intake air temperature exceeds approximately 14°C, the switch should close and both its contacts should...
Checking the thermal time relay
1. Remove the air filter. 2. Turn on the ignition, disconnect the hose from the thermal time relay and the hose from the tee of the vacuum regulator of the ignition and...
1. Remove the air filter. 2. Turn on the ignition, disconnect the hose from the thermal time relay and the hose from the tee of the vacuum regulator of the ignition and...
Possible malfunctions of the L-Jetronic system, their causes and methods of elimination
Faults 1-8 1. The engine does not start (oil temperature is less than or equal to 20°C). 2. The engine does not start (oil temperature is greater than or equal to 60°C)....
Faults 1-8 1. The engine does not start (oil temperature is less than or equal to 20°C). 2. The engine does not start (oil temperature is greater than or equal to 60°C)....
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- General information
- Vehicle description
- Working conditions and tools
- Car care
- Diesel engines
- Engine repair
- Lubrication system
- Cooling system
- Injection system
- Supply system
- Exhaust system
- Gasoline engines
- Engine repair
- Lubrication system
- Cooling system
- Control system
- Power and exhaust system
- Transmission
- Clutch
- Mechanical gearbox
- Automatic gearbox
- Drive shafts
- Chassis
- Car suspension
- Steering
- Tires and wheels
- Brake system
- Body
- Exterior (external elements)
- Interior (internal elements)
- Doors and windows
- Heating and ventilation
- Electrical equipment
- Equipment and devices
- Power devices
- Lighting and signaling
- Electrical circuits
- General information
- Governing bodies
- Driving and operation
- Weekly care
- Maintenance (gasoline)
- Maintenance (diesel)
- Troubleshooting
- Power unit
- I4 petrol engine
- V6 petrol engine (SOHC)
- V6 petrol engine (DOHC)
- Diesel engines
- Engine overhaul
- Cooling system
- Heating and ventilation
- Fuel system (carburetor)
- Injection system «Bosch CIS-E»
- Injection system «Bosch HFM»
- Diesel fuel system
- Supply system
- Starting and charging system
- Ignition system (I4)
- Ignition system (V6)
- Preheating
- Transmission
- Clutch
- Mechanical gearbox
- Automatic gearbox
- Drive shafts
- Chassis
- Brake system
- Car suspension
- Steering
- Body
- Exterior (external elements)
- Interior (internal elements)
- Doors, locks and windows
- Electrical equipment
- Equipment and devices
- Switches
- Headlights and lighting
- Electrical circuits
- General information
- Introduction to the guide
- Power unit
- Engine device
- Repair M102 engines
- Repair M110 and M123 engines
- Cooling and lubrication (M102)
- Cooling (M110 and M123)
- Ignition system
- Power system «Stromberg»
- Power system «Solex 4A1»
- Fuel injection «K-Jetronic»
- Fuel injection «L-Jetronic»
- Transmission
- Clutch
- Mechanical gearbox
- Automatic gearbox
- Cardan and rear axle
- Chassis
- Front suspension
- Rear suspension
- Steering
- Brake system
- Body
- Exterior (external elements)
- Interior (internal elements)
- Doors, locks and windows
- Electrical equipment
- Equipment and devices
- Power devices
- Electrical circuits