Bosch injection nozzle
1 - valve seat; 2 - lower sealing ring; 3 - nozzle winding; 4 - an annular chamber with a fuel filter; 5 - top sealing ring; 6 - 2-pin connector.
To disconnect the injector connector, you need to compress the safety clamp «5» and pull out the chip. After installing it back, check if the safety clamp is installed correctly.
1 and 2 - contacts of the intake air temperature sensor;
3 and 4 - nozzle contacts.
To remove the injector, after unscrewing the safety bolt, remove the injector body (1) with intake air temperature sensor. Carefully remove the nozzle from the holder. When installing, do not reverse the polarity of the contacts (3 = «–»; 2 = «+»). Lubricate the O-ring of the injector body with petroleum jelly so that the male connector (4) was protected from oxidation.
1. Disconnect the ground wire from the battery terminal.
2. Disconnect branch pipes and remove the air filter.
3. Turn off the fuel supply to reduce the pressure in the fuel system (keep your rags ready!).
4. Or install clamps on the fuel supply and return hoses.
5. Bendix throttle body: Disconnect the injector connector.
6. Remove the clamps. To do this, unscrew both TORX bolts.
7. Bosch Throttle Body: Remove the injector body bolt and carefully remove the injector cap.
8. Gently moving the nozzle from side to side, remove it from the holder. At the same time, pay attention to the seals and the spacer ring (Bendix), in what sequence they are located in the nozzle mount.
9. At installation use new sealing rings and grease them with vaseline or engine oil.
10. If the nozzle is installed «dry», then the rubber rings will collapse and will not provide tightness. This can lead to malfunctions such as fluctuating idle speed.
11. The nozzle is installed in such a way that its locating pin falls into the recess provided for it.
12. Install the nozzle body. At the same time, pay attention to the correct position of the connector block.
13. Turn on the fuel supply and remove the clamps from the hoses.
14. Connect the air pipes, install the air filter and connect the battery.