Note: Before starting the test, check the following: idle speed, fuel injection and CO ₂ at idle.
If the engine is running:
1. With the engine idling, disconnect each injector connector individually and observe the idle speed change.
If the idle drop is almost the same on each cylinder, the injectors are OK. If the idle speed or quality remains the same when you disconnect an individual injector, replace the injector and check again.
2. With the engine idling, use a stethoscope to check the clicking sound of each injector.
If any of the injectors does not produce the typical clicking sound, check the sound again after replacing the injector.
If the clicking sound is still missing, check the following:
Whether there is a short circuit in the circuit, a broken wire or a bad connection in the YEL / BLK wire between the main relay of the injection system and the nozzle. Whether there is a break or corrosion in the connector of the connection. Whether there is a short circuit, a broken wire, or a bad connection in the RED/BLK wire between the connection connector and the nozzle. Is there a short circuit in the circuit, a broken wire, or a bad connection in the wire between the nozzle and the electronic engine control unit/AUTOMATIC transmission (ECM/RSM). If everything is in order, check the electronic engine control unit/Automatic transmission (ECM/PCM) and the main relay of the injection system.
If the engine cannot be started:
1. Remove the injector connector and measure the resistance between the two injector contacts.
- Resistance should be: 10-13 Ohm
If resistance is out of specification, replace injector. If resistance is within specification, check fuel pressure.
If the fuel pressure is within specification, check the following:
Is there a short circuit, open wire or poor connection in the YEL/BLK wire between the main fuel injection relay and the injector?.
Is there any break or corrosion in the connection connector?.
Is there a short circuit, broken wire or poor connection in the RED/BLK wire between the connector and the injector,
Is there a short circuit, open wire, or poor connection in the wire between the injector and the engine control module/automatic transmission (ECM/PCM).
If everything is OK, check the engine/transmission control module (ECM/PCM)
Replacement
Caution: Do not smoke when working on the fuel system. Keep open flames away from your work area.
1. Reduce (release) fuel pressure.
2. Disconnect the connectors from the fuel injectors (D16Y7 engine: Remove the air filter).
3. Disconnect the vacuum hoses and fuel return hose from the fuel pressure regulator (D16Y5, 016Y8 engine: Disconnect the vacuum hoses and 2P connector from the fuel vapor removal system cleaning system from the intake manifold controls the solenoid valve).
Caution: Place a rag or cloth over the hoses before disconnecting them.
4. Loosen the retainer nuts on the fuel manifold.
5. Disconnect the fuel rail.
6. Remove the fuel injectors from the intake manifold.
7. Move the new pillow rings onto the fuel injectors.
8. Lubricate the new O-rings with a layer of clean engine oil and place them on the injectors.
9. Insert the injectors into the fuel manifold first.
10. Coat the new O-rings with clean engine oil and press them into the intake manifold.
11. Install the injectors and torus assembly into the intake manifold.
Caution: To prevent damage to the O-ring, install the fuel injectors in the fuel rail first, then install them in the intake manifold.
12. Install, and tighten the nuts of the holder (retainer).
13. Connect the vacuum hoses and fuel return hose to the fuel pressure regulator (D16Y5, D16Y8 engine: Connect the vacuum hoses and 2P connector to the fuel vapor removal system cleaning from the intake manifold controls the solenoid valve).
14. Install the connectors on the fuel injectors (D16Y7 Engine: Install Air Filter).
15. Turn on the ignition (11), but do not use the starter. After the fuel pump runs for about two seconds, the fuel pressure in the fuel line increases. Repeat this two or three times, then check if there is any fuel leakage.
(Original material on the website: www.hondabook.ru)