Warning! Before performing the operation, read the safety precautions for maintenance and repair of the power system (see "Safety measures for the maintenance and repair of the power system").
Removing
1. We prepare the car for work (see "Preparing the car for maintenance and repair").
2. Relieve fuel pressure in the fuel line (see "Fuel Line - Pressure Relief").
3. Remove the air filter housing (see "Air filter - removal and installation").
4. Two keys by 17 mm unscrew the fitting (2) tubes of the fuel rail, holding the hex end of the fuel line hose that supplies fuel to the rail. Remove the hose tip from the tube. Disconnect the plug in the same way (3) fuel drain pipes to the tank. We release the clamp (1) wiring harness attachment.
5. Using a Phillips screwdriver, unscrew the screws securing the fuel pipes and remove the clamping plate of the bracket (see "Fuel rail engine 21124 (1,6i 16V) - removal and installation").
6. Remove the sealing rubber rings from the tubes (see "Fuel rail engine 21124 (1,6i 16V) - removal and installation"). Replace damaged sealing rings.
7. Remove the receiver (see "Engine receiver 2112 (1,5i 16v) - removal and installation").
8. Disconnect the wiring harness block and disconnect it from the bracket (see "Injectors - check").
9. Using a Phillips screwdriver, loosen the crankcase ventilation hose clamp and remove the hose from the pipe of the cylinder head cover.
10. socket wrench by 10 mm with a ratchet, unscrew the bolt securing the tube of the oil level indicator...
... and remove the tube along with the pointer.
11. Hex key by 5 mm unscrew the two bolts securing the fuel rail to the cylinder head.
12. Remove the fuel rail assembly with injectors, wiring harness and fuel pressure regulator.
Comment. To remove the fuel rail, you need to pull it towards you, and then move it to the side to the port side
Disassembly
13. Use a slotted screwdriver to release the two brackets for attaching the wiring harness.
14. Disconnect the four pads of the wiring harness from the injectors.
15. Remove the wiring harness from the fuel rail.
16. Having shifted the spring retainer along the fuel rail, remove the nozzle.
17. Remove the injector spring retainer from the fuel rail.
18. Key by 24 mm loosen the nut on the fuel pipe...
... and remove the end of the tube from the pressure regulator.
19. Hex key by 5 mm unscrew the two bolts securing the fuel pressure regulator (1) and move the clamp (2) fuel supply pipes along the fuel rail. Removing the fuel pressure regulator (3)...
... and remove the tube from the ramp hole.
Warning! Damaged O-rings on fuel lines and injectors must be replaced.
Assembly and installation
We assemble and install the fuel rail in reverse order.
Before assembly, coat the O-rings with a thin layer of engine oil.