Warning! When checking the operation of fuel injectors, never place your hands or any part of your body under the jet of fuel coming out of the injector. Fuel comes out of the injector under high pressure and can penetrate the skin and enter the body, which can lead to death.
Examination
The injector parameters deteriorate with prolonged use and most likely need to be repaired or replaced after 100,000 km of vehicle mileage. Injector testing, overhaul and calibration should be performed by a specialist.
1. Run the engine at fast idle speed.
2. Unscrew the fuel line connections to each injector one by one. Unscrewing the line on a serviceable injector will change the engine operating mode. Unscrewing the line on a faulty injector will not change the engine operating mode.
Removal
Attention! To remove the injector with the needle lift sensor, it is necessary to use a special socket to ensure the movement of the sensor wire, available at the Peugeot station.
1. Remove the air intake duct system and the upper portion of the intake manifold.
2. Thoroughly clean the area around the injectors and the nuts that secure the pipes to the injectors.
3. Unscrew the nuts securing the pipes to the injectors. If necessary, the fuel pipes can be completely removed. Cover the ends of the injectors to prevent dirt from getting in.
4. Remove the return lines from the injectors.
5. Unscrew the fuel injector pipes from the fuel pump.
6. Unscrew the injectors from the cylinder head using a special 27 mm socket wrench and remove the injectors.
7. Remove the copper washers from the injectors.
8. Remove the sealing washers from the cylinder head.
Installation
1. When installing, use new copper and sealing washers. Also install new bushings if the old ones are damaged.
2. When handling the injectors, be careful not to damage the injector needle.
3. When installing, first insert the bushings into the cylinder head, then the fireproof washers (convex upwards) and copper washers.
4. Insert the injectors and tighten them to the specified torque.
5. Install the fuel pipes onto the injectors.
6. Reconnect the fuel return pipes.
7. Install the air intake duct system and upper intake manifold.
8. Start the engine. If the engine does not start, bleed the fuel system.