Note. The engine will not start.
Note.
- Leaky start valves in the injectors can cause the engine to run rough or may cause the engine to not start.
- In order to check the contamination of the starting valves, and with this the increase in leaks, it is possible, in addition to "classical" measurement of the reciprocal amount to perform another vacuum control.
Note. When working on the power supply system, safety precautions must be observed.
1. Escaping fuel should be collected with a clean rag.
2. Remove fuel return connection (3) injectors from the fuel outlet pipe, as shown in the figure below.
3. The open connector on the fuel return pipe must be plugged (arrow), shown in the figure below.
4. Measure when starting the engine at starting speed > 230 rpm. Required reciprocal value: 0 ml. Drip leakage is allowed. If the measured volumetric flow, then at least one of the injectors is defective.
5. Check injectors with vacuum.