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The fuel injection system L-Jetronic

The fuel injection system ?�L-Jetronic?�

1 - fuel tank 2 - the fuel pump 3 - the fuel filter 4 - Distribution pipe 5 - Pressure Regulator 6 - electronic control unit (microcomputer) 7 - injection nozzle 8 - launcher nozzle 9 - adjusting the idle screw (engine M102.920) 10 - the throttle potentiometer 11 - Throttle	12 - air flow meter 13 - the block of relays 14 - the gauge of concentration of oxygen 15.16 - temperature sensor 17 - the gauge-distributor 18 - the valve of additional air 19 - the adjusting screw quality (composition) of a mix of idling 20 - battery 21 - ignition 22 - air temperature sensor

Functional diagram of the fuel injection system "L-Jetronic"

19 - Fuse 20 - ignition coil 24 - starter 30 - the relay of the starter 71 - the fuel pump 90 - relay unit 91 - additional resistors 97 - nozzle 98 - temperature sensor	99 - the main point of connection with "weight" 100 - ECU connector 101 - Relay cold start 102 - Switch throttle 103 - thermal time relay 104 - meter air flow 105 - launcher nozzle

Details of the injection engine M 102

A - 1st version
B - Option 2

1 - pull the throttle 2 - the throttle body 3 - the fuel tank 4 - the electric fuel pump 5 - fuel filter 6 - fuel storage 7 - doser-dispenser fuel 8 - the fuel pressure regulator system 9 - fuel feed line to the nozzle 10 - nozzle	11 - launcher nozzle 12 - the valve of additional air (injection system ?�LE?�) 13 - the valve of additional air (injection system ?�LE?�) 14 - the inlet pipeline 15 - the air filter 16 - the filter element 17 - the air 18 - a lining

Location of the injection engine M 102

1 - Fuel dispenser Distribution 2 - air flow meter 3 - regulator control pressure 4 - fuel pressure regulator system 5 - launcher nozzle 6 - tapered screw adjustment of idling	7 - encoder disk pressure air flow meter 8 - Switch throttle 9 - Fuel valve more 10 - coolant temperature sensor 11 - Electronic control unit

Checking injectors

PERFORMANCE ORDER

Serviceability of the nozzles is best to check with the help of the control unit Bosch 6E84.100.202 in positions 6-10 switch programs. If not, the serviceability of the nozzles can be checked as follows: Disconnect from atomizers. Turn on the ignition. Check voltmeter on both contact pads. Electrical and electronic control unit are correct, if the meter reads the same voltage at both terminals. The nozzles are designed for voltage of 3 V. Attach the pads to the nozzles. Stop the fuel feed line to the nozzle trigger. Remove the nozzle. Disconnect the ignition distributor. Turn the starter. Nozzles must inject fuel at regular intervals.