How much does it cost to clean the nozzle once?

When the nozzle of an ordinary car reaches 100 400 yuan, the cleaning steps are as follows: 1. Remove the fixing screws of the fuel rail; Shake the fuel rail as much as possible and remove it to avoid damaging the fuel nozzle sealing ring; 2. Ensure that the negative electrode of the battery is always disconnected; Remove the fuel injector from the fuel rail; 3. Connect the self-made fuel injector plug and wire with the fuel injector; Replace the oil supply pressure in actual work with the pressure of cleaning agent; 4. Always keep the lead connected to the positive pole of review; Clean the nozzle head; 5. When installing the fuel distribution pipe, pay attention to the position of the fuel injector clamp and the fuel injector sealing ring.