Leaking or clogged injectors need to be replaced

Hello! Leaking injectors in cars is a serious problem, although it has little effect on driving for the time being. Faulty injectors in prolonged use can lead to engine damage. If it is particularly severe, the car will not be able to drive.

There are two reasons for the drip of the car injector, one is that the connected plastic hose has a hole. In this way, when the engine is running, the gas and oil from the fuel tank will leak into the nozzle. If the gasoline leaks to other parts, there will be a ** situation in the case of high temperatures.

At this time, the risk factor of driving a car is very large, and we have to eliminate the problem. Listen to which area the injector is leaking, and find the fault location to replace the plastic hose. Then start the car and try to see if there is a leak at this time.

If we don't find any problems, we can drive safely. If the problem persists, then it's a different kind of dripping.

A clogged nozzle in the injector can also cause dripping, so we need to clean the nozzle. Generally, the nozzle needs to be cleaned once after half a year of use. This prevents the nozzle from clogging and speeds up the passage of gasoline.

It helps a lot for the rapid acceleration of the engine. Usually check the car's equipment before driving, so as to avoid some problems, especially the leakage of fuel injectors. As long as you notice the problem, it will not happen again.

Hope it helps, hope, thank you!

An injector is a solenoid valve that injects fuel into the engine cylinder, atomizing it for better combustion. The quality of the fuel injector determines the performance of the engine, the common fuel injector failure injector is blocked, the fuel injector is used for a long time or the fuel used is poor, the fuel injector will become dirty and cause blockageWhen the fuel injector is dirty, the car will have the following performance:

1. The engine noise becomes louder, especially at low gear and low speed;

2. The throttle response is not sensitive, the acceleration is not smooth, and there will be a lag phenomenon after stepping on the throttle, and the engine speed will rise slowly when the throttle is stepped on in neutral;

3. Idle shaking, especially when starting, it is easy to shake, and there is a slight lack of cylinder in low-gear and low-speed upshifting.

When the fuel passes through the fuel injector, there is a gel inside the fuel injector, and there is insufficient combustion impurity carbon deposit on the outside, which makes the fuel injector too dirty.

The role of the fuel injector is to deliver the fuel precisely to the inside of the engine for combustion. A car fuel injector is a simple solenoid valve. When the solenoid coil is energized, the suction force is generated, the needle valve is sucked up, the nozzle hole is opened, and the fuel is sprayed out at high speed through the annular gap between the shaft needle and the nozzle hole at the head of the needle valve, forming a mist shape, which is conducive to full combustion.

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.

Reasons for higher fuel consumption:

1. Poor ignition: the spark plug gap is too large, and the ignition coil energy is not enough;

2. Poor atomization of fuel injector: the fuel pressure regulator is faulty, and the fuel pressure is too high;

3. Excessive carbon deposition in the engine: part of the gasoline sprayed is absorbed by carbon deposition;

4. Sensor failure: For example, the failure of the water temperature sensor will cause the engine to be mistaken for a cold state, and will always send out a fuel injection signal, resulting in high fuel consumption;

5. Oxygen sensor failure: the fuel correction will be invalid, the computer will always send out the signal of fuel injection, and the failure of the air flow meter will cause the incorrect air intake data.

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.

Thirdly, in the case that the oil circuit is not cleaned and not improved, cleaning the throttle will lead to an increase in air intake, a thin and leaky mixer, and the vehicle will shake at idle speed, 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 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, the nuclear shed we have to 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 costs.

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.

The reason for a leaking or clogged injector may be a hole in the plastic hose to which the injector is connected. In this way, when the engine is running, the gas and oil from the fuel tank will leak into the nozzle, and the nozzle of the injector will be blocked, which will also lead to dripping. The reason for the blockage may be that too much carbon deposits block the fuel injector, and the needle valve of the fuel injector will be blocked by these substances if the needle valve is not cleaned for a long time in the inferior gasoline, which will lead to dryness and blockage.

It is recommended to use it for half a year and need to be cleaned once. This prevents the nozzle from clogging and speeds up the passage of gasoline through the mold.

Injector dripping occurs when fuel injection is stopped, fuel delivery is inaccurate and fuel particles accumulate at the front of the injector needle valve. If it drips after fuel injection, the fuel in the cylinder will not burn completely, which will cause black smoke from the exhaust.

To prevent dripping, the outlet valve's pressure reducing valve is used to pull back any fuel that may have dripped out after injection. If there is a problem with the outlet valve or injector, dripping will occur because there is still residual pressure in the high-pressure tubing after injection. The outlet valve is installed on the distribution head of the injection pump, and at the end of each injection, the outlet valve quickly closes the fuel line to maintain the residual pressure in the high-pressure oil line.

At the same time, the injector must close quickly to avoid fuel dripping. When the oil outlet valve is stuck and the seal is not tight, there will be dripping.

It has a sealing switch inside, this switch is controlled by a device similar to an electromagnet, ECU gives the injection time and amount of fuel injection according to the engine itself and other system parameters of the vehicle, but there is also a closing time, it has a sealing device, once it is closed, it will not drip leakage, if there is one, then it will be repaired!

First of all, let's be clear: the reason for dripping after injection is because the grease nipple is not closed.

Then analyze what is the reason why the grease nozzle is not turned off?

1) The grease nozzle seal joint parts leak due to lack of good sealing, that is, the seal failure of the mechanical parts.

2) If the compression spring fails, there is no pressure on the nozzle seal to cause oil discharge.

3) There is high-pressure oil at the end of the grease nozzle that is not discharged, resulting in excessive sealing pressure of the grease nozzle and unloading of the oil.

4) The grease nozzle has carbon deposits, resulting in poor atomization effect, and it is easy to have oil droplets hanging on the wall.