Location of the screws for fastening the changeover vacuum valve
1. Relieve pressure in the fuel system.
2. Remove the ground cable from the battery.
Warning: If your radio has an anti-theft code, make sure you have the connection codes before disconnecting the battery.
Caution! On models from 1993 onwards, the airbag system is disabled if the battery is disconnected for an extended period of time. If the airbag warning light comes on and remains on after the battery is reconnected, contact a specialist workshop to restore the system to working order.
3. Remove the PCV hose from the cylinder head and intake manifold.
4. Remove the vacuum switching valve (VSP) mounting screws and move the valve to the side.
5. Disconnect the electrical connectors from the fuel injectors and move the wiring harness with connectors to the side.
6. Disconnect the vacuum hose from the fuel pressure regulator.
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7. Disconnect the fuel lines from the fuel pressure regulator and fuel rail.
8. To access the rear fuel line mounting bolts, you must first remove the air intake chamber.
9. Unscrew the fuel line mounting bolts.
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10. Remove the fuel line together with the fuel injectors.
11. Remove the fuel injectors from the fuel line.
12. When installing fuel injectors, use new O-rings.
13. Installation is carried out in the reverse order of removal.