Mercedes S-Class W-140

In 1991-1999 editions

Repair and enterprise of the car

Mercedes S-Class
+ Mercedes Benz cars of the class S (W-140)
+ operation manual
+ Routine maintenance
+ motor
+ Cooling systems, heating
- Systems of power supply and edition
   - System of power supply and an injection of the combustible petrol engine - the general information
      Precautionary measures and rules of attention of purity in operating time with system of fuel
      Dropping pressure in system of the combustible petrol engine
      Check and regulation of number of changes of not aggravated movement / moment of ignition / concentration With
   + system of an injection of the combustible diesel engine - the general information
   + tax system injection of fuel and ignition of HFM-SFI (6-cylinder petrol engines)
   + tax systems LH-SFI and ME-SFI motor (8-cylinder petrol engines)
   + tax systems injection of fuel and ignition of ME-SFI and LH-SFI (12-cylinder petrol engines)
   + tax system fuel injection (diesel engines of the OM603.971 series)
   + tax system fuel injection (diesel engines of the OM606.961 series)
   + system of a turbo charging - the general information
   Systems of immersion of toxicity of the edition - the general information
   System of the edition of the working gases - the general information
   Catalytic reformer (petrol models)
+ electric equipment of the motor
+ gear shifting boxes
+ Awtomatitscheckaja transmission
+ connection
+ brake system
+ Aufhängung and management
+ body
+ electric onboard equipment

Dropping pressure in system of the combustible petrol engine

Before starting service, get acquainted with precautionary measures which are given in office of a precautionary measure and the rule of attention of purity in operating time with system of fuel

After execution of the described low procedure you you only delete excess pressure from system of fuel. In pipelines gasoline remains. Before excluding some hose of fuel, take all necessary precautionary measures.

The system of fuel which is considered in this chapter exists from the tank which is located within it to the pump for fuel by means of a sensor of a reserve of fuel, the filter for fuel, nozzles, the regulator of pressure and various hoses and listeners. Within these knots in time of a push (and also at the made ignition) fuel is under pressure.

After an ignition exception pressure remains in system enough one long time. Before switching off each of above-mentioned components pressure it is necessary to fall.

Elementary way of withdrawal of pressure - following. Pull out the protection device of the pump for fuel and start the motor. If the motor, proworatschiwajte is not started it by a starter within several seconds and if it is started, expect that you are spontaneously ostanowa. To fall completely around pressure, starter motor prowernite kolenwal on couple of changes. Will leave ignition and return you into place the protection device of the pump.

The gate of withdrawal of pressure located works at the highway of distribution of fuel by the principle of the simple nipple. Place the old ragamuffin around the gate, be lowered by kolpatschok and press the nipple. After completion of work you do not forget to return kolpatschok into place.

Think that if pressure fell (or fuel) deletes from system, start of the bolscheje motor as usual, time will receive. To you starter motor proworatschiwat kolenwal, at least, several seconds during which pressure will be restored in system fall, and fuel will fill all pipelines.