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Volkswagen Workshop Service and Repair Manuals

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Rules for cleanliness > < Dismantling and assembling air cleaner

Polo Mk3

4CV fuel injection and ignition system
Servicing injection system
Safety precautions
Warning!
Fuel system is under pressure! Before opening the system place a cloth around the connection. Then release pressure by carefully loosening the connection.

To prevent injuries to persons and/or damage to the fuel injection and ignition system, the following must be noted:

  • ◆ For safety reasons the fuse No. 40 must be removed from the fuse holder before opening the fuel system, otherwise the fuel pump can be activated by the door contact switch.
  • ◆ Do not touch or disconnect ignition wiring when the engine is running or being turned at starter speed.
  • ◆ The ignition must be switched off before connecting or disconnecting injection or ignition system wiring or tester cables.

Observe following if test and measuring instruments are required during a test drive:

  • ◆ Test and measuring instruments must be secured to rear seat and operated by a 2nd person from this location.
 
N28-0102
  • If test and measuring instruments are operated from front passenger's seat and the vehicle is involved in an accident, there is a possibility that the person sitting in this seat may receive serious injuries when the airbag is triggered.
  • ◆ If the engine is to be turned at starter speed, without starting:
  • ‒ → Pull 4 pin connector off ignition transformer -arrow-.
 
N24-0736
  • ‒ → Pull plug -arrows- off all injectors.

Rules for cleanliness > < Dismantling and assembling air cleaner