Exhaust aftertreatment nozzle

How often do you clean the fuel injectors? Generally speaking, if the car is in good condition and the oil quality is good, it can be carried out every 40-60 thousand kilometers. Even if the nozzle is slightly blocked, don't be too nervous, because impurities can be sprayed away and dissolved when accelerating at the high-end position. This is why it is suggested that car owners should often run at high speed when driving everyday to reduce the possibility of carbon deposition. Some car owners pay more attention to the nozzle and clean it as soon as they feel weak. In fact, the fuel nozzle is not a wearing part and does not need to be cleaned frequently. Excessive cleaning will lead to premature scrapping of fuel nozzles.

Generally, the nozzle is cleaned by hanging bottles in the car. Let's take a look at the detailed tutorial:

1. Disconnect the power supply of the automobile fuel pump first, and some models can unplug the fuel pump relay to prevent gasoline from spraying from the interface during cleaning.

2. Connect the disassembly-free cleaning special tool, find the nozzle oil supply pipe joint, disassemble and connect the fuel hose, and then connect it.

3. Open the valve for removing the special cleaning tool, start the engine to keep idling, adjust the flow switch (the flow cannot be too large), and always pay attention to the engine running.

4. Increase the engine speed to 1500 rpm every 2 minutes, keep it for 20 seconds, then resume idling, and repeat it several times until the cleaning agent is completely exhausted.

5. After cleaning, open the pressure relief valve of the disassembly-free cleaning tool, release the system pressure of the disassembly-free cleaning tool, and disassemble the disassembly-free cleaning tool.

6. Restore the connector removed before cleaning, start the engine, check the oil circuit for leakage, and test the vehicle to ensure normal operation.

If the nozzle is seriously blocked and needs to be disassembled and cleaned, it is recommended to hand it over to a professional repair shop. It is difficult for ordinary car owners to disassemble and clean themselves, and mistakes are easy to occur in the assembly process, leading to abnormalities.