Vehicle ignition system Mercedes A-Class (W168)

General description of the ignition system
The ignition system generates an ignition spark, which ignites the fuel-air mixture injected into the combustion chamber. To do this, the ignition coil converts the 12 V...

Spark plugs — removal
Attention! Due to constant technical changes, it may turn out that spark plugs with different parameters are required for certain types of engines. To determine the...

Spark plugs — checking
Examination 8. Inspect the removed spark plug. If the spark plug electrodes are covered with oil or wet, then there is a misfire or the piston rings are in poor...

Spark plugs — installation
Installation 11. Screw in the spark plugs by hand until they touch the cylinder head, then tighten them to 25 Nm. Attention! Install the spark plug wrench strictly...

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