Engine management system car Volkswagen Polo 4

Petrol injection and ignition system
The engine management system controls fuel distribution and coordinates the ignition system. Advantages of the electronic engine management system: Precise dosing of the amount of...

Safety precautions when working with a gasoline engine injection system
The fuel system is under pressure! For safety reasons, cover the connection point with a thick cloth before releasing the hose connection. Then, by carefully removing the hose,...

Operation of the petrol engine management system
The electric fuel pump draws fuel from the fuel tank and delivers it through a filter located under the tank to the fuel manifold. The pressure regulator, depending on the engine,...

Sensors and actuators for injection systems
Fuel tank ventilation system consists of a container with activated carbon and a solenoid valve (regeneration valve). The activated charcoal tank accumulates gasoline vapors that...

Checking / adjusting the idle speed / ignition timing / CO content
As part of the maintenance, it is no longer necessary to adjust the idle speed, ignition timing and CO content, since the values of these parameters are constantly regulated by...

General check of the injection system
For systematic troubleshooting and therefore troubleshooting, proprietary special measuring instruments are required. Such measuring devices are very expensive and, as a rule, are...

Intake Manifold/Fuel Manifold/Valve Injectors
1.2L petrol engine 1 - engine top cover With integrated air filter. 2 - wire guide 3 - connecting plug For crankshaft speed sensor, black, 2-pin. 4 - connecting plug For valve...

Specifications for petrol injection systems

Diagnostics of malfunctions of systems of injection of petrol engines
Malfunctions in the electronics of the control system can almost only be detected with the help of special measuring instruments. Before faults can be diagnosed based on...

Ignition system
The ignition system generates an electrical spark that ignites the air-fuel mixture in the engine cylinder. To do this, the voltage of 12 volts of the battery is converted in the...

Ignition Coils/Spark Plugs
AWY/AZQ 1.2L engine 1 - ignition coil with power output stage 2 - connecting plug Black, 4-pin. 3 - connecting plug For knock sensor. Black, 2-pin. Plug contacts are gold-plated....

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Polo 4 Polo 3