Common faults of Sequoia nozzle 1 1 year.

Nozzle jitter is normal after cleaning. First of all, our driving computer has self-learning function, which means that the fuel injection data before cleaning will be stored in ECU. If the air hole of the fuel injector is blocked by carbon deposit, the throttle will automatically increase the opening to ensure idle intake. The data used by the throttle valve after cleaning is still the data when it is blocked, so the throttle valve with higher opening will lead to unstable idle speed and serious jitter. We just need to restore the throttle opening to the factory setting.

Symptoms of excessive fuel injection by injector

Generally, if the fuel injection quantity of automobiles is too large, the exhaust pipe will emit black smoke, which is mainly caused by incomplete combustion of gasoline. Secondly, when we find that the engine is not easy to stall, we can also judge that there is too much fuel injection. Excessive fuel injection during driving will also cause the engine to shake obviously and the power will drop obviously.