Honda old Fit, idle shaking, acceleration while driving has the sound of knocking cylinder why

Hello, engine shake, it is recommended that you clean the throttle, clean the idle motor, and try again, this car is not so easy to knock the cylinder. [If you have a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Hello! Check the oil! Not enough oil will cause the engine to shake and make abnormal noises [There is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Hello, this is the phenomenon of missing cylinders [There is a problem with the car, ask the car master. 4S shop professional technician, 10 minutes to solve. 】

Clean the idle motor and throttle, it is best to remove a carbon deposit, so that you can, this car has some will knock on the cylinder, but some have knocked on hundreds of thousands of kilometers without any problem! We suspect that the piston pin is loose, [there is a problem with the car, ask the car master.] 4S shop professional technician, 10 minutes to solve. 】

Knocking on the cylinder is not good for burning, just clean the oil circuit, and that's how I do it.

The sensor technology is high, and the emission is slightly substandard, and the mixture is slightly inappropriate, it will alarm, which is caused by poor combustion, and it is not a big problem, but don't be careless, there will definitely be a big problem if the long-term combustion is not good. Not to mention the quality of Sinopec's fuel, this cannot be guaranteed, Sinopec regularly cleans the underground oil tank, this closed big guy, what is not dirty, so it is completely possible that a batch of fuel with more impurities will be added to the car before cleaning. Naturally, it burns badly, shakes, detonation, and fires appear.

I have encountered similar problems before, and in the end, I just used Siyoupu Fuel Cleaner Fuel Cleaner to do a good job. The idle speed will not shake the alarm for 10 minutes, and the detonation data has never appeared.

Causes of Honda Fit Idle Engine Shake:

1) Dirty air filter: The air filter is designed to protect the engine and reduce wear, generally replaced in about 10,000 kilometers, if the replacement is not timely, there will be insufficient air intake to cause low idle speed, and the engine shakes, as long as the filter element is replaced, it can be solved.

2) High-voltage line breaking: High-voltage line opening refers to the high-voltage wire core breaking, which can affect ignition and cause engine shaking.

3) Spark plug life: The spark plug has a lifespan, and the ignition efficiency is significantly reduced after more than 3-40,000 kilometers, and can affect the ignition, which is the most common failure, and the spark plug can be replaced completely.

4) Low idle speed: The engine idle speed value has been set in the computer, and when the number of revolutions is low to a certain range, the car computer will automatically adjust it. If the idle speed is too low and the jitter is beyond the control range of the computer, some cars have adjusting screws on the throttle to adjust the idle speed, and some cars can not adjust, this kind of car can check the idle valve, throttle, air flow meter, vacuum sensor, adjust the ignition time (car with distributor), you can increase the idle speed.

Low idle speed can occur even when the water temperature is low, so you can check and replace the thermostat.

5) Abnormal water temperature: There is a normal range of engine working temperature, and when the water temperature is high, the ignition time will become early, the oil-gas mixing ratio will change, the oil viscosity will become thinner, and the lubrication performance will deteriorate. The general fault cause is the jitter caused by the lack of antifreeze, the thermostat cannot be opened, the fan does not rotate, and the temperature of the temperature control switch is inaccurate.

6) Fuel injector blockage: The fuel injector of the EFI truck is a key component of automobile fuel injection, and the service life is very long, which can reach hundreds of thousands of kilometers. However, because there is gum in the gasoline, the fuel injection hole of the fuel injector will be blocked, so the amount of fuel injected by each fuel injector is inconsistent, resulting in the inconsistent work of each cylinder and causing the engine to shake.

The solution is to remove it and clean it.

7) Carbon deposition and oil scale blockage: The throttle, idle valve, and air intake hole will be blocked by carbon and oil scale after being used for a period of time, and the air intake will be poor, which will affect the stable idle speed and shaking. It is necessary to inspect and clean the above parts with cleaning agent, and there is no need to remove them for cleaning.

There are several reasons for engine shake:

1. The engine has serious carbon deposits, and the most common car with serious shake is that the fuel injector throttle valve is too dirty or too much carbon;

2. Ignition system problems, check the working conditions of spark plugs, high-voltage wires and ignition coils;

3. The oil pressure is unstable, if the first pressure of the pump is abnormal or the error and poor work of the inlet pressure sensor will cause the body to shake;

4. Aging of engine parts; Excessive carbon deposits in engine emissions absorb carbon from the gasoline of the cold-start injector, which leads to a dilute cold-start mixture and difficulty starting.

The idle vibration of the strict chain is generally caused by the lack of cylinders in the engine, the aging or loosening of the foot rubber, carbon deposits, fuel system failures, etc.

1.Serious engine carbon deposits: Cars always have the problem of carbon deposits, including cylinder carbon deposits, throttle carbon deposits, spark plug carbon deposits, intake carbon deposits, etc.

When the engine has too much carbon deposit, it will affect the ignition energy, air intake efficiency and air-fuel ratio of the car, resulting in the unstable power output of the car, and the phenomenon of idle speed and acceleration jitter appears.

2.Unstable oil pressure: If you have cleaned the engine carbon deposits, cleaned the throttle, replaced the oil gasket and spark plug, etc.

And when idling, you still find that the body shakes, it is recommended that you go to the 4S shop to check whether the oil supply pressure and intake pressure sensor are normal, if the oil pump supply pressure is abnormal, or the intake pressure sensor value is wrong, and the work is not good, it will cause the body to shake.

3.Engine cylinder shortage: Engine cylinder deficiency mainly refers to the engine one or more cylinders are not working properly, which is generally manifested as:

The exhaust pipe shakes violently, and the engine shakes clearly, sometimes accompanied by abnormal noises. This is mostly related to ignition coil failure.

4.Aging of engine parts: Shake in the car is also associated with the aging of the engine feet (also known as claw pads).

The engine foot is actually the shock absorber system of the engine. The engine feet are responsible for absorbing slight vibrations when the engine is running. If there is a problem with the engine base, these vibrations can be transmitted to the steering wheel and cab, causing vibrations at idle.

Solution; The best way is to clean the oil circuit, clean it regularly, there is no specific experience in the research and development parameters of the clean engine from the new car, coupled with the continuous improvement of emission standards, can not adapt to the change of fuel, all manufacturers of the engine are unable to solve this jitter problem in the short term, plus the fuel quality is not very good or the initial fuel of the new car factory is stored for too long, resulting in a rapid increase in the colloidal composition of the oil circuit, which will continue to pollute the fresh fuel and cause no good fuel to participate in combustion in the later stage. The occurrence of excessive carbon deposits is especially common for China VI vehicles. We only need to maintain a clean oil circuit, so that Bi Liang can gradually alleviate most of the problems. The use of PNF dope fuel additives can solve the problems caused by carbon deposition.

The causes of the Honda Fit engine shake are as follows:1The engine has serious carbon deposits, and the most common cause of car shake is that the throttle valve is too dirty or the injector has too much carbon deposit.

When there is too much carbon deposited in the engine, the gasoline ejected from the cold-start injector is absorbed by the carbon deposit. 2.Engine Missing Cylinder:

Engine cylinder deficiency mainly refers to the abnormal operation of one or more cylinders of the engine, which is manifested as obvious intermittent exhaust gas flow from the car, and serious shaking of the exhaust pipe socks, so that the engine shaking can be clearly felt, and sometimes accompanied by a sudden sound. This is mostly related to ignition coil failure. 3.

The engine's flammable mixture is sometimes thin and sometimes thick, causing it to shake at idle after a cold start. The lower the temperature, the greater the amount of oil required for the cold start, and the more carbon deposits will affect the nuclear power of the cold start.

Honda Fit idle engine shake cause: air air filter dirty: air air filter is designed to protect the engine from wear and tear, and it is generally replaced around 10,000 kilometers. If it is not replaced in time, the engine will shake due to insufficient air intake, which can be solved by replacing the filter element.

High-voltage line breaking: High-voltage line breaking refers to the breakage of the conductor core of the high-voltage line, which will affect the ignition and cause the start-up to make the calling machine shake. The resistance can be measured with a multimeter, and the resistance several times larger can be replaced with a disturbance slip height.

The service life of the spark plug: The spark plug has a service life. After the service life exceeds 3-40,000 kilometers, the ignition efficiency is significantly reduced, which can affect the ignition.

This is the most common failure. Just replace all the spark plugs. Low idle:

The idle speed of the engine has been set in the computer, and when the number of revolutions is low to a certain range, the on-board computer will automatically adjust it. If the idle speed is too low, it is out of the control of the computer. Some cars have adjustment screws on the throttle valve to adjust idling, while others don't.

This kind of car can check the idle valve, throttle, air flow meter, vacuum sensor, adjust the ignition time of the slow ruler (car with distributor) to increase the idle speed. Low idling can also occur when the water temperature is low. Check and replace the thermostat.

Water temperature abnormality: The engine operating temperature is within the normal range. When the water temperature is high, the ignition time will be earlier, the oil-gas mixing ratio will change, the viscosity of the oil will become thinner, and the lubricating performance will become poorer.

Common causes of failure include jitter caused by insufficient antifreeze, thermostat failure, fan not rotating, temperature of temperature control switch is inaccurate, etc., which can be ruled out. Fuel injector is blocked: The fuel injector of the EFI truck is a key component of automobile fuel injection, with a long service life, reaching hundreds of thousands of kilometers.

However, due to the presence of gum in the gasoline, the injection hole of the injector will be blocked, resulting in the inconsistent injection amount of each injector, resulting in the inconsistent operation of each cylinder and the shaking of the engine. The solution is to remove it and clean it. Carbon deposits and grease clogging:

The throttle, idle valve, and air intake will be clogged with carbon and grease after a period of use, and the air intake will be poor, affecting idle stability and jitter. The above parts can be solved by checking and cleaning with cleaning agent, and there is no need to remove and clean.

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