Fuel Injection System — Service Intervals (VW Golf 2)

1. Due to the complex structure of the fuel injection system, all work must be limited to the actions described in this Manual. Other adjustments and checks of the system are impossible for most car owners, so they must be entrusted to service stations. The mixture composition is set during the production of the car at the factory, and therefore, during normal operation, the system does not require adjustment. However, after installing new parts in the system, you can adjust the mixture composition, having first read the contents of the relevant subparagraph. The only necessary adjustment is changing the idle speed of the engine - this is performed using bolt 12, installed in the throttle body (figure 3.51).




Idle speed is adjusted when the engine is warm.



2. Periodic maintenance of the fuel injection system includes checking the condition and reliability of the system and replacing the air filter insert at certain intervals.

a) Check the condition and safety of the low-pressure system elements.

b) In case of malfunctions in the system, it is necessary to familiarize yourself with the contents of the item of the table of malfunctions. However, first of all, carefully check the elastic pipes of the connection system, fuses and relays for obvious damage.

c) If for any reason it is necessary to disconnect or remove part of the system, do so carefully to prevent debris from entering the system.

(The information is presented on the website: VWmanual.ru)

d) Regardless of engine temperature, there is increased pressure in the system, so care must be taken when disconnecting the fuel pipes. The ignition must be switched off and the clamps of the wires supplying electrical equipment must be removed from the battery terminals.

d) Before disconnecting the fuel lines, it is recommended to reduce the pressure in the system by slowly loosening the fuel supply line near the start valve and collecting the fuel that has leaked from the connection with a rag.