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Mercedes-Benz C-Class (W203, 2000 issue)

general info. full specifications. diagnostics. hints. tips. tricks
Mercedes-Benz W203
Instruction Manual
Routine maintenance
Cooling and heating
The power supply system and release
The power supply petrol and diesel engines
The fuel injection system gasoline engine
The fuel injection system of the diesel engine. Turbocharger
Exhaust systems and reduce emissions. Turbocharger
Electric motor
Manual gearbox
Automatic Transmission
Coupling and power shafts
Suspension and steering
Onboard electric

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The power supply system and release

Separate characteristics are resulted also in the text of the Head and in case of compulsion of their performance are shown in bold


Fuel tank, l



including fuel reserve


Petrol models

Unleaded gasoline is not worse AI-95 / A-85, may temporarily use unleaded gasoline is not worse AI-91 / A-82.5. The power of the engine to decrease slightly, with an increase in fuel consumption

Do not use fuel additives. They can lead to increased wear or damage to the engine.

Diesel models

Summer and winter diesel fuel

Number 2 or number 1 to ASTM D975

Do not use marine (Marine Diesel Fuel), boilers, etc. diesel fuel.

When using diesel fuel with a sulfur content exceeding 0.5%, make replacement of motor oil every 10,000 km.

Winter fuel, provides normal operation down to -20 ?° C.

Through preheating enabled when the heating system of the car, the car in the winter diesel fuel can usually be operated without failure when the outdoor temperature down to -25 ?° C.

Do not add gasoline to diesel fuel.

In the case of summer diesel fuel, as well as the outdoor temperature is below -15 ?° C should be added to the fuel specific, depending on the amount of outside air temperature flow improver or kerosene.

Flow improver may also be used in combination with kerosene.

Certificate means you can get to the service station Mercedes-Benz.

The proportion of additives taking into account ambient air temperature should be minimal.

Share kerosene mixture should not exceed 50%.

The additive is mixed to the diesel fuel to the loss of flow properties of diesel fuel as a result of paraffin separation. Problems due to the evolution of paraffin can be eliminated only heating the entire power system.

Mixing diesel and kerosene held only in the fuel tank. For this first pour kerosene tank, and then add the diesel fuel.

After this, the motor must work for a while in order to blend dispersed throughout the system power.


Additives kerosene lead to lower the flash point of the diesel fuel. Because of this danger when handling fuel mixture increases. Observe the relevant safety regulations!

Petrol injection

Electronic microprocessor-injection system with HFM thermometric intake air mass meter. Intake manifold with variable geometry

Diesel injection

Electronic, microprocessor-based, direct-injection of the total fuel rail ?«Common-Rail?», turbocharger and cooling blown air

Fuel Pressure PSI

Gasoline engines, to the connected vacuum

3.2 - 3.6

with disconnected vacuum

3.7 - 4.2

Pressure drop

Immediately after the engine


In 30 min.


The performance of the fuel pump

1 l / 35 sec

The content of the exhaust gases at full load

Gasoline engines CO 2%

8.8 - 9.8

Diesel engines CO 2%

9.8 - 10.8

Opacity of diesel, no more


O 2%

0.1 - 0.5

CO in the exhaust pipe,%

Max. 0.5

HC, ppm


The content of CO in the 2800 - 3100 rev / min



The value of lambda

0.98 - 1.02



Dual chain from the crankshaft sprocket

The moment of injection

Assembly with a control pin, the piston of cylinder 1 of the engine should be at TDC

Idling speed, min

Adjusting the idle speed within maintenance is required.

Diesel engine 611

650 - 850

Diesel engine 612

640 - 840

Limitation of revolutions per minute.

4500 - 4900

Efforts of a tightening of carving connections, Nanometer

Fastener tightening torques are given in the text of the Head and on some graphics *.

* Highlighted text in bold torques are subject to exact observance; no bold efforts resulted only roughly.

Clip nozzle

7 nm to + 90 ?°

Bolting pipe nozzles


Gear pump


Flange pump


Mount pump


Reception pipe to the exhaust manifold


Bracket for transmission


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The power supply petrol and diesel engines

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