What are the symptoms of a faulty urea nozzle?

[DeAshlyn]

The malfunctioning of the fuel injector nozzle leads to ineffective operation, resulting in severe carbon buildup inside the engine cylinders, accelerated wear of the cylinder liners and piston rings, unstable idle speed, increased fuel consumption, lack of power during acceleration, difficulty starting, and excessive vehicle emissions. In severe cases, it can even damage the engine. The specific causes leading to intermittent cylinder misfires are as follows: 1. Ignition System: Aging of the ignition coil and spark plugs causes the cylinder's ignition system to fail. Problems with the ignition coil most commonly result in reduced power, and in severe cases, can cause the engine to stall suddenly. 2. Cylinder Wire Wear: To check if the cylinder wires are functioning properly, simply remove the cylinder wire without needing a screwdriver, insert a spark plug, start the engine, and compare each cylinder to identify issues. 3. Fuel Injection System: Clogged injector nozzles or fuel lines prevent sufficient fuel from being supplied to the cylinder for combustion, naturally causing the cylinder to malfunction. 4. Excessive Spark Plug Carbon Buildup: Long-term poor combustion leads to carbon deposits accumulating at the spark plug ignition point. When these deposits are wetted by fuel, they create a parallel shunt resistance, resulting in spark plug leakage, weak sparks, or even complete spark plug failure.