Brz boom throttle jitter

It is mainly caused by incomplete combustion factors such as excessive mixture, individual cylinders not working, and unequal combustion time.

Inspection method:

1. Call up the fault code and analyze the cause of the fault.

2, check the ignition timing, ignition time is too late.

3. Check whether the cold start injector is still injecting oil or leaking oil, and further find out the reason.

4. The timing switch of low-temperature start injector is invalid.

5. The spark plugs of individual cylinders have poor ignition or the spark is too weak.

6, check the injector, whether there is excessive fuel injection, or the phenomenon of excessive fuel injection in individual cylinders, whether there is leakage.

7. Check whether the fuel pressure is too high, whether the pressure regulator fails to open the oil return line, and whether the vacuum sensor hose of the pressure regulator falls off or breaks.

8. Check whether the output signals of the air flow meter sensor and the throttle position sensor are correct.

9. Check the working condition of EFI circuit and related sensors.