If the fuel pressure is too high, it will not cause the cylinder to catch fire

The amount of fuel consumption is directly related to the owner's pocket, of course, it cannot be ignored. Especially if the fuel tax is used to replace other taxes and fees in the future, fuel consumption is a direct economic indicator. Here, we summarize some of the main causes of fuel consumption in daily driving, hoping to help you save fuel.

Human factors: the driver's technology is not in place, and there is always unreasonable up/down gears and excessive braking in driving, which will artificially increase the power loss of the engine. At the same time, too much braking will increase the number of starts, and the fuel consumption rate at the start is very large.

In addition, low temperature driving is also a major factor of fuel consumption, generally speaking, the car requires the engine to run at a normal temperature (80 to 90), if the engine is not preheated after starting, the engine is in a low temperature state, the mixture atomization is not good, the combustion is not complete, and the fuel consumption of the car will also be large.

Engine usage: The engine usage plays a pivotal role in the amount of fuel consumption, and if the engine has the following problems, the fuel consumption will increase significantly. The idle speed adjustment is too high; The semi-balanced hole of the float chamber is blocked, resulting in cylinder suction, etc.

In the ignition system, the short circuit of the high-voltage coil, the ablation of the distributor contact, and the breakdown of the capacitor will cause the high-voltage fire to be weak, the ignition capacity to decrease, and the fuel consumption of some mixtures can not be completely ignited and increase. Excessive carbon accumulation in spark plugs, leakage of spark plugs, spark plug sleeves and individual high-voltage lines will also cause the ignition capacity to decrease and individual cylinders do not work to increase fuel consumption. Valve mechanism, in the valve mechanism, the valve clearance is too large or too small can not achieve the purpose of sufficient air intake and clean exhaust, at the same time, the valve spring is too soft, the valve, the valve ablation, so that the valve can not reach the ideal degree of sealing, so that the cylinder pressure is reduced, and the engine power is reduced.

In addition, with the increase of engine working time, the wear of cylinders, pistons and piston rings increases, so that the sealing performance decreases, and the fuel consumption naturally increases. At the same time, the overlapping ports during piston ring assembly are also a factor during repairs.

In the use of automobiles: not paying attention to maintenance and not using fuel additives is also a factor in the increase of fuel consumption.

I hope it can help you, hopefully!

Causes of a fire in one cylinder of the car:

1. If the ignition fails, you need to check the ignition coil and the high-voltage line.

2. Fuel injection failure, caused by poor car line or fuel injection pressure.

3. Check the cylinder sub-cylinder and timing system.

4. The crankshaft position sensor is faulty.

5. Human operation reasons, operation errors during maintenance, etc.

6. Wear and age, untimely maintenance.

7. If the engine fails, repair or replace the engine in time.

When the engine fails, check whether it is stable when it is running at idle speed, whether the engine has obvious lack of power, and check whether the water temperature of the engine is normal through the car instrument.

The reasons for the failure of the car to shout the fire of the fierce cylinder are as follows

1. Caused by the damage of external parts, mainly caused by valves, valve seat rings, valve guides, spark plugs and other combustion chamber peripheral components, and the misfire caused by the failure of the mixed gas in the cylinder to ignite or lag ignition. In the first case, the spark plug is usually checked, and after the intake and exhaust valves are cleaned, check whether there is any problem with the supercharger and whether the supercharger impeller is worn or ablated. In the second case, it is usually due to an abnormality in a certain component or part, resulting in the unstable adjustment of the ECU to the engine, and the fire caused by the failure to reach the theoretical value of the ECU calibration;

2. At a certain moment, the spark between the spark plugs is poor, and there will be a lack of cylinder Zheng seepage bridge. The self-inductance voltage of the fuel injector coil of a cylinder is too high, resulting in the stagnation or loose closure of the next working cycle, which in turn causes poor working and fire of a cylinder;

3. At a certain moment, the instantaneous switch tube caused by the poor internal high-power triode fan heat of the computer version does not work, causing the ignition coil or the ignition independent module to not work, and then causing the ignition;

4. The instability of modern integrated circuit boards and electrical components has led to a lot of instantaneous failures, which cannot be explained, but the computer receives very few signals, so the computer can only refer to the knock sensor and the crankshaft position sensor, and then calculate that it is a certain fire.

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The cause of the engine fire and the symptoms of the early occurrence of Zhensun.

Engine cylinder lack and misfire is a meaning, but the name is different, cylinder lack and misfire both refer to a cylinder or multiple cylinders in a multi-cylinder engine does not work or can not work normally; After the failure of missing cylinder misfire, the engine will have severe shaking, resulting in insufficient power, weak acceleration, high fuel consumption, and if it is a multi-cylinder misfire, the engine may not start.

Special attention should be paid to the fact that some cars will still inject fuel from the fuel injector when they lack cylinders, so that the unburned gasoline mixture enters the exhaust pipe and continues to burn where the three-way catalytic converter is located, resulting in the three-way catalytic converter being scrapped due to high temperature.

The causes of engine misfire can be divided into two main categories.

1. Failure of the electronic control system, such as sensor signal loss or signal inaccuracy, wrong control signal or no signal output, failure to ignite due to damage to the spark plug or ignition coil, no fuel injection from the fuel injector and line failure, etc.

2. Mechanical failure, mainly due to insufficient cylinder pressure, such as valve closure is not tight, air leakage, the gap between the cylinder, the piston, and the piston ring is too large, resulting in insufficient compression ratio in the cylinder.

The lack of cylinders in the engine will bring great harm: the speed and power of the engine will decrease. Increased fuel consumption and emissions of pollution. Aggravate the wear of the running parts and shorten the service life of the lubricating oil. The engine is missing cylinders and needs to be overhauled in time.

The solution to the lack of cylinders in the engine:

1. Circuit failure: spark plugs, cylinder wires, ignition coils, etc. are damaged, and it is easy to lack cylinders. You can use the broken fire to determine which cylinder parts are damaged, and replace the damaged parts;

2. Oil circuit: If the oil circuit is not cleaned for a long time, there will be more gum and magazines in the oil circuit, and the fuel injector will be blocked. The oil cut-off test is used to detect the fault point and carry out maintenance;

3. Mechanical failure: The internal piston, connecting rod, piston ring, piston pin, etc. of the engine are faulty, which will generally be accompanied by obvious abnormal noise, and obvious metal chips can be seen when detecting the oil. Generally, this situation requires the engine to be dismantled.

Hello, the current number of people consulted may not reply in a timely manner, if it is a vehicle failure problem, it is recommended to use the computer to detect the specific cause of the failure, search for "car master" can be consulted at any time to ask the car to ask the question, 24 hours ** answer.

Insufficient cylinder pressure and misfire --- means that the mixture is ignited by the spark plug before it reaches a certain pressure, so that its power is not emitted, which is an invalid ignition.

As you said, when the valve is not closed tightly when the car is hot, the intake and exhaust valves must be closed when the engine is working, and if the valve is not closed tightly, some flames will come out of the intake and exhaust valves, resulting in insufficient power. Misfire means that the fuel is not burned, for diesel engines: if the valve is not closed tightly, the compression ratio will be reduced, and the diesel may not be compression-ignited, that is, the fire.

For gasoline engines: the fire is mainly in the ignition system, such as spark plug damage, too large clearance, ignition coil, distributor failure.

There are many reasons for the multi-cylinder fire of the car, and the following is an example of a gasoline engine

Electrical wiring:

a. Aging of electrical circuits, leakage, etc., intermittent ignition faults;

b. Ignition coil or spark plug failure, poor ignition or poor conduction;

c. In terms of lines, loosening, breaking skin, etc.

d. Human operation reasons, such as carelessness or mistakes during maintenance: faults caused by touching, loose plugs, etc.

Oil circuit: a. The injection pressure is not enough, and the electronic oil pump fails;

b. The oil pipeline is blocked or there are impurities, and the oil supply is not smooth;

c. Fuel injector failure, blockage or self-failure;

d. The fuel injection caused by the line is abnormal.

e. Other faults.

Engine: a. Wear and aging, untimely maintenance, or the use of inferior, unqualified, substandard oil;

b. Due to excessive wear, the cylinder pressure cannot reach the normal value.

c. Belt aging, ignition timing;

d. Gas distribution timing;

e. Intake part or throttle section;

f. Intake and exhaust valves and rocker arm components (see emission standards);

g. Defects caused by other places.

Cylinder misfire can be a spark plug, a high-pressure ignition distributor, or a high-voltage wire, or a clogged fuel injector.

Hello, the reasons for the fire of this engine are as follows, the first is that your spark plug is damaged, the second is that the ignition coil is damaged, and the third is that your engine cylinder pressure is insufficient. The fourth is that your fuel injector is damaged, and the fifth is that your engine control computer board is damaged, but the common cause is usually a damaged ignition coil, or spark plug.

Commonly known as lack of cylinder, a category of failure. Two or three sentences are not clear.