What is the effect of low intake pressure when the engine is idling or creeping in a traffic jam?

In order to make the engine speed stable at idling, the EUC will adjust the idle air-fuel ratio through the idle step control valve and the like, so that the oil-gas mixing ratio is relatively thick at idling, which will cause incomplete combustion.

When idling, the engine speed is relatively low, and the resistance of the engine to customer service will be relatively large, so that the speed fluctuation at idle speed is relatively large, in order to make the engine speed stable at idle, <>

Therefore, the EUC will adjust the idle air-fuel ratio through the idle step control valve and the like, so that the oil-gas mixing ratio is relatively thick when idling, which will cause incomplete combustion.

In addition, carbon deposits can also be formed due to problems such as incorrect ignition time, problems with valve clearance, severe wear between the valve stem and the duct, and poor sealing of the cylinder wall and piston ring.

The idle speed of the car engine will affect the normal driving and is prone to traffic accidents.

Carbon deposits can cause severe engine shake.

Consumption of gasoline. Parking there for nothing and burning 10 minutes of idle gasoline is no different from a normal traffic jam.

If it affects driving, it will easily cause accidents.

Wheels tend to slip and roll over.

The car is unstable and prone to rollover.

It can cause damage to the tires and wear out the tires.

It will cause the two sides of the car to be unbalanced and cause a rollover.

It can cause great damage to car tires.

The body is unstable and prone to accidents.

1.Intake manifold or various valves leaking: When the location of the air leak only affects individual cylinders, the engine will shake violently, and the impact on cold car idling will be even greater.

2.Excessive fouling of the throttle and air intake: and the change in the cross-sectional area of the air channel makes it impossible for the control unit to precisely control the idle air intake, resulting in the mixture being too thick or too thin, resulting in abnormal combustion.

3.Idle Air Actuator Failure: An idle air actuator failure results in inaccurate idle air control.

Common causes are: throttle motor damage or card issuance; Idle stepper motors, duty cycle solenoid valves, and rotary solenoid valves are damaged or damaged. 4.

Intake is inaccurate: the control unit receives the wrong signal and sends out the wrong command, which causes the engine idle air intake to be inaccurate and the car is inaccurate, which makes the engine burn abnormally, which is an indirect cause of idle instability.

Whether the air intake system will cause idle instability, and why the air intake system will cause the car to idle instability. It has also been found on the Internet that the closure of the air intake system will cause the car to idle unsteadily. Guess the following is to share the information about why the air intake system will cause the car to idle unsteadily.

1.Intake manifold or various valves leaking:

2.When the intake air, gasoline vapor and combustion exhaust gases enter the intake manifold, the mixture is too thick or too thin, causing the engine to burn frequently. When the leakage position only affects the cylinder, the engine will shake violently, which has a great impact on the idle speed of the cold car.

3.Excessive fouling of throttles and intakes:

4.Moreover, the change of the cross-sectional area of the air duct makes it impossible for the control unit to accurately control the idle air intake, resulting in the mixture being too thick or too thin, resulting in frequent combustion.

5.Idle Air Actuator Failure:

6.Faulty idle air actuators can lead to inaccurate idle air control. Common causes are: damage or cracking of the throttle motor; Damage or rupture of the idle motor, duty cycle solenoid valve, and rotary solenoid valve.

7. Dislocation of air intake:

8.The control unit receives the wrong signal and sends out the wrong command, which leads to the inaccurate control of the idle air intake of the engine and affects the normal combustion of the engine. This is an indirect cause of idling.

I hope this article can help you, and the article ends here.

1.Leakage of intake manifold or various valves: There should be no air, gasoline vapor or combustion waste gas entering the intake manifold, otherwise the mixture will be too thick or too thin, and the engine will burn abnormally.

If the leakage level is well placed and only affects individual cylinders, the engine will shake violently, and the idle speed of the cold car will also be greatly affected. 2.Excessive fouling of the throttle and intake:

Excessive carbon and dirt deposits in the throttle and surrounding intake tracts will cause changes in the cross-sectional area of the airway, making it impossible for the regulating unit to accurately adjust the idle air intake, resulting in too high or too low concentration of the mixture, resulting in abnormal combustion. 3.Idle Air Actuator Failure:

Failure of the idle air actuator may affect the accuracy of the conditioning of the idle air. Common causes include damage or hairpins to the throttle motor, damage to the idle motor, duty cycle solenoid valves, and rotary solenoids or hairpins, etc. 4.

Incorrect air intake: The regulating unit sends out the wrong command after receiving the wrong signal, resulting in inaccurate adjustment of the engine idle air intake, which in turn causes the engine to burn abnormally, which is also an indirect cause of idle instability.

Summary. Hello, I am your exclusive service technician, attentive, attentive and careful to help you solve the problem of using the car, the idle intake pressure of the car engine is 53 kPa, which is significantly more than the normal idle intake pressure value. The first is that there is an air leak in the intake system, which leads to excessive intake pressure.

The second aspect is to consider that there is a fault in the intake pressure sensor and the pressure sensor circuit.

Hello, this question can give you a perfect reply, wait for me to sort out the information, I'm typing, 2-3 minutes, don't finish.

Hello Cavity, I am your exclusive service technician, attentive, attentive and careful to help you solve the problem of using the car, the idle intake pressure of the car engine is 53 kPa, and the pressure is significantly more than the normal idle intake pressure value. The first is that there is an air leak in the air intake system, which leads to excessive air intake pressure. The second aspect is to consider that there is a fault in the intake pressure sensor and the pressure sensor circuit.

No air leakage was found in the intake tube.

If there is no air leakage, consider that there is a fault in the pressure sensor itself and its wiring.

Okay thank you. Well, you're welcome.

The reasons for the low intake pressure of the engine are: 1. Intercoolant front or rear hose: air leakage seal is damaged and the clamp is loose.

2. Pipeline leakage: pipeline leakage at the measuring point of the tray inlet pressure sensor. 3. Inaccurate measurement

The test bench pressure sensor is not accurate. 4. The setting of the pressure limit value is unreasonable: it is necessary to check whether the limit value is set reasonably.

5. Faulty pass-valve: faulty wastegate valve of turbocharger. Information about the engine is as follows:

1. Automobile engine: It is the device that provides power for the car, and it is the heart of the car, which determines the power, economy, stability and environmental protection of the car. 2. Classification:

According to the power**, automobile engines can be divided into diesel engines, gasoline engines, electric vehicle motors and hybrids.

Summary. Hello, glad to answer for you. The reason why insufficient air intake affects the turbine pressure, 1. The engine turbocharger equipped with a turbocharger has a miasma when the air intake decreases) or the influence of the valve mechanism causes the engine to be insufficient, which will cause the carbon atoms in the fuel to not fully react with the oxygen atoms, so the heat released is reduced, and the engine is weak.

2 The intake stroke of the engine piston movement requires sufficient air, 3. Insufficient air intake will lead to insufficient combustion, affect the heat generated, and thus affect the work done, which will eventually lead to a decrease in the output power of the engine, showing engine weakness.

Hello, glad to answer for you. The reason why the insufficient air intake affects the turbine pressure, 1. The engine turbocharger equipped with a turbocharger has a miasma when the air intake decreases) or the influence of the empty structure of the valve valve or the insufficient engine inflation will cause the carbon atoms in the fuel to not fully react with the oxygen atoms, so the heat released will be reduced, and the engine will be weak. 2 The intake stroke of the engine piston movement requires sufficient air, 3. Insufficient air intake will lead to insufficient combustion, affect the heat generated, and thus affect the work done, which will eventually lead to a decrease in the output power of the engine, showing engine weakness.

In addition, there are 7 reasons that affect the turbine pressure. 1.The air inlet filter of the air engine is dirty, the impeller and the blade diffuser are dirty, especially for the small supercharger, the mouth must be regularly maintained, thoroughly cleaned, and the filtration must be strengthened.

2.There is a lot of carbon deposits in the supercharger turbine, which increases the rotational resistance, decreases the intake pressure, and sometimes even stops rotating. 3.

The diesel engine intake pipe or each joint leaks, so that the boost pressure is reduced. 4.The cylinders are heavily worn and have a large amount of blow-by, which reduces the exhaust gas volume of the intake turbine and reduces the boost pressure.

5.The intercooler is dirty, and the intake resistance increases, so that the intake pressure of the diesel engine decreases. By measuring the anterior and posterior pressure difference of the intercooler, it was determined that when the pressure difference exceeded 1960 Pa, it had to be cleaned.

Otherwise, there is sometimes a surge of the compressor. 6.The turbine exhaust is not smooth (caused by the blockage and deformation of the exhaust pipe), and the rotor speed does not rise high, which reduces the differential boost pressure.

7.The sudden drop in pressure at the outlet of the supercharger is generally caused by damage to the bearing, and the bearing must be stopped and replaced.

I hope the above can help you, I wish you a happy life, and if you are willing, give a thumbs up.

Possible reasons for low fuel pressure are:

The oil pump is faulty. Clogged or leaking oil lines.

The fuel filter is clogged.

The relief valve is faulty or the pressure regulation is too low.

These failures can lead to a reduction in oil supply, which can affect idle and acceleration.

Oil pumps, gasoline filters can cause the pressure to be too low. If the pressure is too low, the engine will not be supplied with good oil, so it will affect the problem you mentioned.

Slight adjustment of the inlet pressure at idle speed may result in one of the following:

1.Idle RPM Changes: A small adjustment in the inlet pressure can result in a small adjustment in the air flow, resulting in a small change in the idle RPM.

2.Changes in fuel consumption: Minor adjustments in intake pressure can affect the efficiency of fuel combustion, resulting in small changes in fuel consumption. then rent.

3.Engine Rattle: Minor adjustments to the intake pressure may result in changes in the engine throat, which can be due to small changes in air flow and fuel mix ratio.

4.Engine Lights On: If the intake pressure adjustment causes a problem in the engine, it may cause the engine fault lights to turn on. At this point, it's best to have a professional inspect the vehicle to determine what the problem is.

It is important to note that any adjustment of the vehicle should be done by a professional to avoid damage or danger to the vehicle.