Volkswagen Polo 3 with 1994 for 2001 of release.
1. The general data
2. The engine
3. Greasing system
4. Cooling system
5. Systems of injection of fuel
5.1. Measures on cleanliness maintenance at works on injection system
5.2. Security measures at works with injection system
5.3. Adjustment of idling and the maintenance WITH
5.4. Check of details of system of injection Mono-Motronic
5.5. A cable of management throttle заслонкой
5.6. System of catching of steams of fuel
5.7. Check and replacement of the fuel pump
5.8. The fuel filter
5.9. System of injection of design Magnetti–Marelli 1 AV (since 1996)
5.9.1. Power supply system details
5.10. System of injection of fuel Motronic МР 9.0 (since 1996)
6. Ignition system
7. Coupling
8. A mechanical transmission
9. A drive of wheels
10. A steering without the amplifier
11. A steering with the hydraulic amplifier
12. A forward suspension bracket
13. A back suspension bracket
14. Brake system
15. An electric equipment
16. Heating and ventilation system
17. An automatic transmission
18. Appendices


5.9.1. Power supply system details

Besides a fuel tank it is necessary to mention following details.
The fuel pump is established horizontally in a tank. It submits fuel to the fuel filter.
The fuel filter is established on a fuel tank, it is necessary to replace it according to instructions on maintenance service. The filter has a label in the form of an arrow which after its installation should be always directed to a forward part of the engine.
Steams of fuel arriving from a tank, are caught by an absorber. The valve of switching connected to it in an initial condition is opened. At inclusion of ignition the valve is closed. In an operating time of the engine the valve opens according to commands of the block the managements which are in an absorber steams again come back in an inlet collector for burning. At deenergizing of ignition the valve within several seconds remains closed that the engine could continue to work thanks to receipt of steams.
The regulator of pressure of fuel is established in the distributor of fuel (stage). The regulator receives fuel from the pump and supports the constant pressure equal 2 bar idling and 2,5 bar at full loading. Not used fuel comes back in a tank.
Atomizers carry out fuel dispersion in an inlet collector. Four their valves are put in action at each turn of a cranked shaft.
Idling and the maintenance WITH are not regulated.

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5.9. System of injection of design Magnetti–Marelli 1 AV (since 1996)
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5.10. System of injection of fuel Motronic МР 9.0 (since 1996)