Cleaning of fuel injectors, how to clean fuel injectors

When the fuel injector fails, it will lead to an increase in carbon deposition in the engine, unstable idling, increased fuel consumption, weak acceleration, difficult starting, excessive emissions, etc., and in serious cases, it will cause the fuel injector to be blocked, and then damage the engine.

When encountering a blocked fuel injector, pay attention to the following points;

First, don't coax the throttle with a big foot, especially if the fuel injector is blocked, which will cause the fuel injector to be completely damaged.

Second, the fault light is not good for a long time, and the fault light will be reported after a certain number of times, indicating that the car is not burning well before, which may be oil or oil deterioration and there is no good fuel to burn.

Third, in the case that the oil circuit is not cleaned and improved, cleaning the throttle will lead to increased air intake, thinning of the mixer, and the vehicle will shake at idle, and the throttle will be channeled.

Fourth, repairing a car does not mean that it will be good, and repairing it may aggravate problems in other places. This is normal and requires the use of elimination.

Fifth, in the case of poor combustion, shaking, and scurrying, the first thing to clean the oil circuit is, and not to rush to replace the accessories.

This is very easy to deal with, encounter such a fault code, after the detection, it has been determined that the fuel injector is blocked, then the traditional way is to disassemble the fuel injector to replace, not to mention the replacement of the labor costs, we will say the reason for this, we have to first figure out why it will be blocked, will be after the replacement, to avoid the later blockage, after all, the replacement cost is very high, you replace the plug again, is it to consume a lot of cost.

There are two types of blockage, one is the external blockage caused by ash and carbon deposits on the outside of the fuel injector in the combustion chamber, and the other is the internal blockage caused by the oil in the oil circuit. Both of these blockages can be cleaned and unblocked by PNF-based additives. But be sure to use effective additives.

Don't wait for the car to have a problem before thinking about changing the parts, the cost outweighs the loss.

Once the injector fails, the most intuitive feeling of the vehicle will decrease, so it is important to clean the injector regularly. It can be cleaned by replacing the gasoline filter and then removing the fuel injectors one by one and cleaning them thoroughly with a washing machine.

In fact, there are many ways to clean the fuel injector of the vehicle, some of them are to hang the bottle or add fuel cleaning agent, etc., the most direct and effective way is to replace the gasoline filter, and then remove the fuel injector one by one and clean it thoroughly with a cleaning machine, and at the same time, it is also necessary to pay attention to the sealing ring on the fuel injector, because the aging of the sealing ring is accompanied by the middle sun mill, which will also lead to the disproportion of the mixture.

The most important thing to check before checking the car fuel injector is the gasoline filter of the vehicle, the gasoline filter is the first line of defense to filter gasoline impurities, and you should pay attention to caution when disassembling the gasoline filter, because the oil pipe clamp is particularly easy to break; Secondly, when disassembling and assembling the fuel injector, you should also pay attention to whether the sealing ring on the fuel injector is damaged.

How to determine whether the fuel injector needs to be cleaned:

After the vehicle landed, put a white paper towel on the tail of the exhaust pipe of the vehicle, and then start the vehicle, put the white paper towel close to the exhaust gas from the exhaust pipe spray bucket, wait for a period of time, see if the white paper towel will be polluted by the exhaust gas and turn black, if the paper towel turns black, it means that the combustion of the mixture is not sufficient, and you need to check the fuel injector.

The cleaning steps of the fuel nozzle are as follows:1Open the hood, lay the protective pad, and check the operation of the engine

Whether there is vibration, abnormal noise, oil leakage and water leakage, check whether various oil pipes, vacuum pipes, and engine wiring harnesses are aging and cracking; 2.Disconnect the power supply of the fuel pump: open the fuel tank cap to relieve pressure, disconnect the gasoline pump or circuit, start the engine, consume the remaining gasoline in the oil pipe, and turn off the engine after the state judgment; 3.

Install special equipment (bottle) for dismantle-free cleaning: After mixing the cleaning liquid with gasoline, pour it into the storage bottle of the no-dismantling cleaning tool; 4.No need to disassemble the connection of special cleaning tools

First, find the fuel supply pipe joint of the fuel nozzle, disassemble and connect the fuel hose, and then connect; 5.Start the engine and clean the nozzle: do not disassemble, open the valve of the special cleaning tool, start the engine to keep idling, adjust the flow switch (the flow rate is not too large), and always pay attention to the operation of the engine; 6.

During the cleaning process, increase the engine speed to 1500 rpm every 2 minutes, hold for 20 seconds, and then resume idle operation, repeat several times until the cleaning agent is completely exhausted; 7.After the operation, close the manual valve of the oil circuit: open the pressure relief valve of the no-dismantle cleaning tool, release the pressure of the no-dismantling cleaning tool system, and disassemble the no-dismantling cleaning tool; 8.

Reinstallation: Reinstall all connectors and connecting pipes, connect the oil pump circuit, lock the fuel tank cap, start the engine, check the oil circuit for leaks, test the vehicle to make sure everything is in order and clean.