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What to Do When the Urea Nozzle is Clogged?

1 Answers

OAlice

07/29/25 6:40pm

The solutions for a clogged urea nozzle are: 1. Use a small ultrasonic cleaner for cleaning; 2. Soak in hot water with the spray end immersed in the liquid. The reasons for a clogged urea nozzle are: 1. The quality of the vehicle urea solution does not meet the standard; 2. After the engine ignition is turned off, the residual urea solution in the nozzle pipeline crystallizes, causing blockages in the pipeline and nozzle; 3. The urea nozzle is located in the exhaust pipe and is exposed to high temperatures for a long time. When it does not receive the cooling effect of the urea solution, the urea nozzle gets damaged; 4. If the SCR system is inactive for a long time, the residual vehicle urea solution in the SCR system crystallizes and blocks the pipeline and nozzle; 5. Complex physical and chemical reactions occur in the SCR system, forming deposits that accumulate over time, leading to nozzle clogging.

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