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REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES
Mercedes-Benz C-Class (from 1993 to 2000, the year of issue)

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Mercedes-Benz C-class
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Fault Diagnosis (OBD)



If the engine does not start, you need to determine the cause of the fault. To do it you can run, you should fulfill two basic premises: fuel mixture should reach the cylinder and the spark between the electrodes should slip spark. Therefore, first of all, always check the access of fuel.

To determine whether there is a spark, individually unscrew the spark plug, insert the plug into the spark plug and keep in front of "the masses" motor block. It does not hold the plug with your bare hands or spark plug wire, and use well-insulated clamps. Check the contact "masses." Ask the assistant to start the engine.


A warning

To avoid damage to the catalyst, there should be no fuel injection.

Keep in mind the safety instructions for the electronic ignition and fuel injection device.


CAUSE
REMEDY
The engine runs poorly or not run at all
Service error when you start Depress the clutch pedal, switch on the ignition, preventing gas. Turn the key in the ignition and activate the starter. Once the engine starts, release the key. Be sure to immediately move from a place and at a strong frost warm up the engine for about 30 seconds. If the engine does not start after repeated attempts to start in spite of the individual ignition again starts with the accelerator pedal fully depressed. Attention! Frequent ineffectual attempts to start one after the other can harm the catalyst, t. To. Unburned fuel enters the catalytic converter, and burns from the explosion. When the engine is hot during the launch touch the accelerator pedal slowly.
Faulty, contaminated fuel system Check the fuel system.
Faulty injection device Check the injection device according to the troubleshooting.
Too slow rotating starter Charge the battery. Check the electric circuit of a starter.
Too low pressure compression Repair the engine.
Incorrect timing, chain elongation control Check the timing, replace the control circuit.
Defective gasket cylinder head Replace gasket.




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