Mercedes S-class W202

1993-2000 of release

Repair and car operation



Mercedes W202
+ 1.2. The general data
+ 2. Maintenance service
+ 3. Engines
+ 4. Greasing system
+ 5. Cooling system
+ 6. Heating, ventilation
+ 7. Ignition system
- 8. Fuel system
   + 8.1.1. Introduction
   + 8.2. System of injection of petrol engines
   - 8.3. System of injection and a food of diesel engines
      8.3.2. Check / adjustment of the beginning of giving of fuel by the pump
      8.3.3. Atomizers
      8.3.4. Specifications of system of injection and a diesel engine food
      8.3.5. Diagnostics of malfunctions of system of injection and a food
   + 8.4. System of release of the fulfilled gases
+ 9. Transmission
+ 10. A running gear
+ 11. A steering
+ 12. Brake system
+ 13. A body
+ 14. An electric equipment
+ 14.2. Electroschemes







8.3.5. Diagnostics of malfunctions of system of injection and a food
THE GENERAL DATA

THE REASON
WAY OF ELIMINATION
The engine shaft rotates ovally, the high expense of fuel, low capacity of the engine
Atomizers are faulty Replace atomizers.
Atomizers негерметичны (drops), are polluted Replace atomizers.
Зависла or the atomizer needle is broken Replace an atomizer needle.
The beginning of giving of the pump is displaced Check up adjustment of the beginning of giving of the pump.
The fuel pump of a high pressure is faulty Establish the new pump of a high pressure.
The engine has mechanical defect; негерметичны valves, are worn out cylinders / pistons, негерметична a lining of a head of the block of the cylinder, narrowing in system of release of exhaust gases Check up a compression, check up an engine mount / the bearing of a shaft of the engine.
Malfunctions at work in an idling mode
Heavy course of a cable by pressing of a pedal of an accelerator Adjust a cable of management of gas so that it easily moved.
Oval moving of a shaft of the engine at idling and the cold engine, too high frequency of rotation at нагретом the engine Check up vacuum hoses for increase of frequency of rotation in an idling mode.
Are not fixed топливопроводы on the fuel pump of a high pressure and the fuel filter / are faulty топливопроводы Check up rigid landing, if necessary replace the pipeline.
Screw connections on the fuel pump of a high pressure are weakened Check up a basic plate on cracks or a break, if necessary replace the pipeline.
The system of giving of fuel is faulty The fuel filter is polluted, негерметичны or fuel drain hydrolines and топливопроводы a high pressure or a ventilating line of a fuel tank are polluted, bent or narrowed in junctions.
Too high expense of fuel
The air filter, негерметична the power supply system is polluted Clear or replace filtering element. Check up visually tightness of all топливопроводов (inlet, drain, топливопроводов a high pressure, the fuel filter and the fuel pump of a high pressure).
The drain hydroline is littered Ослабьте on the fuel pump of a high pressure a drain hydroline. Start the engine and check up, whether fuel acts. Blow air a drain hydroline from the fuel pump of a high pressure to a fuel tank.
Too high frequency of rotation of a shaft of the engine at idling Check up frequency of rotation of a shaft of the engine at idling and possibility of its decrease.
Too low capacity of the engine
Verifying preconditions: speedometer indications should be normal; the size of tyres to correspond to serial equipment; wheels (brakes, bearings, naves of wheels) should be blocked, coupling and a drive of management of coupling should be in a normal state; process обкатки should be finished. Speed should not decrease at additional equipment (luggage on a roof etc.). For definition of the maximum speed it is recommended to pass an equal test site in both directions, approximately 1000 metres to define the maximum speed by means of a stop watch.
The emphasis of the lever throttle заслонки, limiting its maximum opening is not reached Adjust a cable of management throttle заслонкой.
The air filter is polluted Clear or replace filtering element.
Air vials in топливопроводе from the filter to the fuel pump / of the fuel pump of a high pressure Check up submitting топливопровод and the filter. It is not fixed or негерметичен the fuel filter; негерметичен submitting топливопровод between a tank and the fuel filter; негерметичны linear connections on the fuel filter.
Are faulty топливопроводы Check up visually tightness of all топливопроводов (inlet, drain, топливопроводов a high pressure) from the fuel filter and the fuel pump of a high pressure.