The fuel injector is a key component of the diesel engine, The quality of its work directly affects the diesel engine Power, economy, emissions, reliability. So, if fuel injector problems definitely your vehicle can’t move as normal. Here we share 4 cause why it happen to your truck.
1. Poor atomization of the oiler
Fault phenomenon: The power of the diesel engine is reduced, the exhaust smoke is black, and the sound of the machine is not normal.
Failure analysis: When the injection pressure is too low, the injection hole wears carbon deposits, the spring end face wears or the elastic force decreases, it will cause the injector to open early, close late, and form a poor injection atomization phenomenon.
2. Needle valve stuck
Fault phenomenon: The engine power drops, shakes, and even fails to start.
Failure analysis: Moisture or acidic substances in diesel will cause the needle valve to corrode and get stuck. After the needle valve sealing cone is damaged, the combustible gas in the cylinder will also penetrate into the mating surface to form carbon deposits, which will cause the needle valve to bite and spray. The oiler loses its fuel injection effect, causing the cylinder to stop working.
3. Oil drops on oil spray nozzles
Fault phenomenon: When the temperature of the diesel engine is low, it is difficult to start, the exhaust pipe emits white smoke, and the diesel engine becomes black smoke after the temperature rises. And high fuel consumption.
Failure analysis: When the injector is working, the cone surface of the needle valve body will be subjected to strong impact, plus high-pressure fuel is continuously ejected from this place, the cone surface will gradually wear or spots, causing the injector to drip oil.
4. The oil return is too high
Fault phenomenon: reduce the injection pressure, postpone the injection time, reduce the engine power, and even cause the diesel engine to stall.
Failure analysis: when the needle valve coupler is worn seriously or the needle valve body and the injector housing are not tightly matched, the oil return of the injector increases significantly, and the valve plate wear will also cause the oil return of the injector Too large, affecting engine performance.
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Tips :
Any fault in the fuel injector should not be taken lightly, because any fault may affect the performance of the engine.
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