What happens when the fuel injector nozzle has poor atomization?

[VonJack]

Poor atomization of the fuel injector nozzle can lead to smoke from the exhaust, increased fuel consumption, reduced power, unstable engine operation, loud noise, and in severe cases, engine stalling and difficulty starting the vehicle. The related details are as follows: 1. Valve damage or excessive dirt on the injector nozzle: Poor atomization of the injector nozzle is caused by valve damage or excessive dirt inside the injector nozzle. If the poor atomization is due to valve damage, simply replacing the valve will suffice. If it is caused by excessive dirt inside the injector nozzle, cleaning the injector nozzle is necessary, using benzene-based aromatic hydrocarbons for cleaning. 2. Working principle: When the controller is powered on, the suction port generates a strong negative pressure that forces the oil mist to be directed into the suction device. Under the action of the turbine inside the oil mist purifier, the oil mist particles collide, and tiny particles aggregate into larger controllable particles, which are then intercepted by high-efficiency suction materials and collected through the reflux port for recycling.

[Will]

Recently, I've dealt with quite a few cars experiencing poor fuel injector atomization, and the issues are really troublesome. Poor atomization refers to fuel injectors spraying fuel in overly large droplets or unevenly, which affects engine combustion. The most obvious symptoms include difficulty starting the car—for example, turning the key multiple times before the engine fires up. At idle, the RPM is unstable, and you can feel the car shaking in the driver's seat, like a minor earthquake. Acceleration is also sluggish, with delayed throttle response, and fuel consumption spikes—normally, a full tank that lasts 400 km might drop to just over 300 km. The exhaust emits black smoke with a pungent smell, and in severe cases, it can clog the catalytic converter, leading to even costlier repairs. The usual causes are carbon buildup in the injectors or unstable voltage. It's recommended to clean the fuel injectors regularly and use fuel additives as a preventive measure—don't wait until the problem gets worse.

[TylerDella]

My old car once had an issue with poor fuel injector atomization, which left a deep impression on me. It often failed to start when igniting, driving me crazy. At idle, the car would shake unsteadily, and when the traffic light turned green, it would jerk forward in an embarrassing stop-and-go manner. Acceleration felt like an old ox pulling a cart - even with the pedal to the metal, the car wouldn't speed up, making overtaking terrifying. Fuel consumption increased significantly - from 0.3 yuan per kilometer to over 0.4 yuan, causing my wallet to shrink every month. The exhaust even emitted gray smoke, risking fines at inspection checkpoints. The mechanic diagnosed clogged injectors and fixed it for 500 yuan. Later I learned that delayed repairs could damage engine components. Now I've developed the habit of maintaining the fuel system every six months - early inspection prevents bigger troubles.

[DiBenjamin]

Bro, poor fuel injector atomization basically means the fuel spray is uneven. The car starts sluggishly, and ignition feels like it's dragging. At idle, the engine shakes and trembles like it's drunk. Acceleration is weak—stepping on the gas gives no response for ages, fuel consumption skyrockets, and black smoke pours from the exhaust, which is annoying. Usually, it's just dirty or clogged injectors—cleaning or replacing them will fix it. Remember to use high-quality fuel to prevent this and save yourself the hassle of constant repairs.