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Français- Fuel Injection Nozzle Blockage And Cleaning Method
The fuel injector is a solenoid valve that injects fuel into the engine cylinder to make it atomized, which is more conducive to combustion. The quality of the fuel injector determines the performance of the engine. The common fuel injector failure is that the fuel injector is blocked. When the fuel injector is used for a long time or the fuel used is poor, the fuel injector will become dirty and cause blockage.
When the fuel injector is dirty, the car will exhibit the following behaviors:
1. The engine noise becomes louder, especially at low gears and low speeds;
2. The throttle response is not sensitive, and the acceleration is not smooth. After stepping on the throttle, it will feel lagging. If you step on the throttle in neutral gear, the engine speed will rise slowly;
3. Idle speed jitters, especially when starting, it is easy to jitters, low gears and low speed up shifts have a slight cylinder shortage.
The fuel injector has a very important effect on the engine, and the quality of the fuel injector affects the power of the engine. Poor work due to dirty fuel injectors will cause carbon deposits in the engine cylinders, and accelerated wear of the cylinder barrel and piston rings, resulting in unstable idle speed, increased fuel consumption, weak acceleration, difficulty in starting, and excessive emissions. If it is not cleaned up in time, the fuel injection nozzle will be blocked, and the engine will be damaged in severe cases.
Therefore, it is necessary to clean the fuel injection nozzle regularly. Long-term non-cleaning or frequent cleaning of the nozzle will cause bad effects. The fuel injector is not a consumable part, and it does not need to be cleaned frequently. Excessive cleaning may cause the fuel injector to be scrapped in advance. Generally speaking, if the vehicle is in good condition and the fuel quality is good, it can be cleaned every 40,000 to 60,000 kilometers. Even if the fuel injection nozzle is slightly clogged, you don't need to be too nervous, because the impurities can be sprayed away and burned to dissolve when accelerating at a high gear.
Cleaning method of fuel injector:
1. Disconnect the fuel pump power of the car first. For some models, you can unplug the fuel pump relay to prevent gasoline from spraying out of the interface during the cleaning process.
2. Connect the special tools for no need to dissemble cleaning, find the fuel injection nozzle fuel supply pipe joint and disconnect and connect the fuel hose, and then connect it.
3. Open the special tool valve for free dis-assembly and wash, start the engine to keep idling, adjust the flow switch (the flow cannot be too large), and always pay attention to the engine's running condition.
5. After cleaning, open the pressure relief valve of the non-dis assembly and wash tool to release the system pressure of the non-dis assembly and wash tool, and disassemble the non-dis assembly and wash tool.
6. Restore the joints that were removed before cleaning, start the engine and check for leaks in the oil circuit, and test the vehicle to ensure it is normal.
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