Car engine ignition system Mazda 121 (3)

Ignition system — general information
A spark forms in the ignition system, which ignites the air-fuel mixture in the cylinders. In order to create a powerful spark, the ignition coil converts the 12 V...

How the ignition system works
1. Ignition advance angle; 2. Load; 3. Number of revolutions. The optimal ignition timing of the engine depends primarily on the instantaneous values of the engine speed...

Precautions when working with an electronic ignition system
Electronic ignition systems have high voltages up to 30,000 V. In some cases, such as moisture in the engine compartment, a high voltage pulse can break through the...

Checking high voltage wires
If the resistance of the high-voltage wires is too high, difficulty starting the engine and interruptions in sparking may occur. Switch off the ignition. Remove the...

Checking and replacing the ignition coil
The ignition coil should be checked when there are no sparks in the spark plugs when the engine is cranked by the starter. The ignition coil is checked with an ohmmeter....

Removal and installation of the engine control unit
Attention: The control unit is programmed with basic values for individual sensors. During operation, the control unit receives signals from sensors that, due to...

Spark plugs — general information and specifications
The spark plug consists of a central electrode, an insulator with a housing and an electrode «masses». Electrode «masses» very tightly connected to the insulator, and...