What are the faults caused by the gasoline EFI car when there is oil and electricity?

Inspection of intake and exhaust systems and mechanical parts. After inspection, the air filter and air intake pipeline are not blocked and leaking, and the three-way catalytic converter in the exhaust system is also working normally. It is unlikely that there will be an error in the mechanical valve timing, and it is normal to recheck the valve timing for the sake of insurance.

The measured cylinder pressure is 1100kPa, which means that the system is also working properly. A new set of spark plugs was replaced, and the engine showed signs of fire. But it still doesn't start properly.

After inspection, there is a flooding phenomenon.

Why is the tank always flooded? Let's analyze the following reasons that can cause flooding: Insufficient ignition energy:

Low cylinder pressure: Mixture is too thick: Wrong valve timing:

The ECU is faulty. Based on the above inspection analysis, we can exclude points, , and points. As for the failure of the mixture gas concentration and ECU, all maintenance colleagues know that the ECU can not be damaged easily, so they analyze and inspect the mixture gas concentration system.

This shows that the cylinder pressure is insufficient, and there are many reasons for the lack of cylinder pressure. The general causes of this phenomenon are: valve leakage, piston ring wear, poor oil quality, cylinder gasket leakage, valve timing failure, etc.

We still follow a nosek, outside-in, and simple-to-complex diagnostic approach. The reasons are complex. In the maintenance process, we must be especially careful about every step and every component we check.

As long as you think clearly, don't let go of every blind spot. And the idea of maintenance is also very important, but also to continue to learn new technologies, new methods. All maintenance colleagues should pay more attention when encountering such faults, and also hope to enrich the theoretical knowledge of automobiles.

The car cannot start, the idle speed is unstable, the speed is high and low, and the inspection items are as follows

1. The battery voltage of the car is low; Specific detection method: test the battery voltage with a three-purpose meter voltage level, if it is below 10V, it is recommended to replace it. If it is around 11V, it is barely used; Be prepared for replacement. It can be used above 12V;

2. Check whether it is caused by carbon deposits; If you travel about 20,000 km, focus on checking and cleaning the throttle;

3. Inspect, test and replace spark plugs;

4. Confirm the quality of the gasoline added;

5. Detecting the ignition switch;

6. Test and detect the starter, gasoline pump, sensor and other related components of the starting and oil supply system;

7. After powering on, do not start immediately, wait for 30 seconds to 1 minute, and then ignite; See if it works;

Regardless of any of the above situations, pay attention to the time when the car cannot be hit once, be sure to play again after an interval of 15-30 seconds to protect the battery but not generate power and prolong its service life.

Injector failure, such as (throttle opening signal abnormality, air flow meter failure, crankshaft position sensor failure. The ignition timing is not accurate (crankshaft position sensor, ignition advance angle), cylinder volume, too much carbon, etc.

Use the engine mirror to see if the throttle has deposited too much carbon. Whether the piston rings are worn to the limit. Can the oil pressure be reached.

There are many reasons why you can't hit the car, such as incorrect ignition time, short circuit of spark plug, clogged silencer, etc.

The four conditions for being able to land the car are: appropriate air-fuel ratio 2, correct ignition timing 3, high enough cylinder pressure 4, sufficient ignition energy.

The reasons why the car cannot catch fire when it has oil and electricity are: 1. There is a problem with the oil circuit. 2. The power supply is insufficient, and the car has no power**. 3. The tubing may be blocked. 4. Caused by carbon deposition in the ignition coil and spark plug. 

First of all, it is to check the "timing" of the car, check the timing of the car, the timing is not accurate, it will also cause the car to have oil and electricity but not the car, which is a more common reason. However, not all the timing of the car is to be the timing belt, and some cars are using the timing chain, which has a smaller chance of inaccurate timing.

Then, it is the spark plug, check whether the spark plug needs to be replaced, generally 40,000 kilometers to replace the spark plug, but the specific spark plug material is related, platinum spark plug has the longest service life, of course, ** is relatively expensive.

Finally, it is the inspection of the fuel injector, the car has oil and electricity is not on the car, and the fuel injector is blocked, if the fuel injector has too much carbon or even clogs the fuel injector, it will affect the atomization of gasoline, and there is no way to get on the car, so it is usually necessary to go to the 4S shop for maintenance regularly.

Hello Answer! There are several cases, 1, the starter motor is broken. 2. Circuit failure, which will break very suddenly. 3. The oil supply system is faulty, in this case, the sound of the motor can be heard during ignition, but it cannot be started.

For vehicles that have been used for a long time, due to the reduction of performance in all aspects, the phenomenon of car stalling often occurs, and it is necessary to go to the car repair shop regularly for testing, or the use of substandard gasoline leads to the increase in engine carbon deposition caused by the flameout. Causes of starting device: power failure, poor contact of electromagnetic switch, poor contact between the commutator of the starting motor and brushes, and slippage of the clutch of the transmission mechanism of the starter.

Causes of oil supply system: low-pressure oil circuit blockage, loose pipeline oil leakage, high-pressure oil pipe air, poor technical condition of fuel injector, incorrect fuel injection timing angle. Oil supply system reason:

The low-pressure oil circuit is blocked, the pipeline is loose and leaking, the high-pressure oil pipe has air, the injector is in poor technical condition, and the fuel injection timing angle is incorrect.

If this is the case, then there must be no warning before the car does not catch fire, very suddenly. Circuit failure: fuse blowing, high-voltage coil breaking, low-voltage circuit breaking, center ignition wire falling off, splitter head leakage, spark plug damage.

Electronic failure mainly refers to the loss of function of the computer control board. Causes of starting device: power failure, poor contact of electromagnetic switch, poor contact between the commutator of the starting motor and brushes, and slippage of the clutch of the transmission mechanism of the starter.

Insufficient cylinder compression pressure: the cylinder gasket is damaged and leaking, the valve is not closed tightly, and the piston cylinder liner is worn and leaking.

The car has electricity and oil and suddenly turns off and can't hit: 1. Generally speaking, automatic cars rarely stall, and manual transmission, due to the driver's technical reasons, is likely to cause stalling, but it cannot be ruled out that automatic transmission will not turn off. The main reason is likely to be the addition of inferior fuel, and some gas stations sell impure oil in order to make huge profits, resulting in poor fuel for vehicles.

The flow of gasoline is blocked, do not wait for the gasoline to burn out before refueling, there is no oil pressure in the engine fuel supply pipe. This situation usually occurs in the morning when the temperature is very low, and is caused by long-term dirt in the fuel line. When the temperature is very low, the water mixes with debris and the fuel line is blocked, and as a result, it cannot be started.

1. Check the status of the battery.

In most cases, the difficulty of starting the car in winter is caused by the loss of battery power or the expiration of the battery life. When the battery is low, the speed is weak when starting the car, and only the clicking sound is heard, and the clicking sound will gradually become a clicking sound when the ignition is lit again. Do not ignite continuously to avoid the battery running out.

2. Change the appropriate engine oil.

In winter, as the temperature drops, the viscosity of the oil increases, making it difficult for the oil to flow, which increases the resistance of the engine. If it is difficult to start, check whether the oil label is incorrect.

3. Replace the spark plug in time.

After a few years of use, spark plugs are prone to cause problems such as carbon deposition, leakage, excessive clearance, and ablation, which will cause difficulties in car ignition, cold start, and even hot engine start, and often need to be ignited multiple times. Therefore, when driving to a certain number of kilometers or feeling that the vehicle is difficult to start, weak, shaking, increasing fuel consumption, or inexplicably stalling, please check the spark plug status and replace it in time.

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The reasons why the car cannot catch fire when it has oil and electricity are: 1. There is a problem with the oil circuit. 2. The power supply is insufficient, and the car has no power**. 3. The tubing may be blocked. 4. Caused by carbon deposition in the ignition coil and spark plug. 

Question 04 Corolla automatic transmission, the car idles for a few seconds and the fire is broken, and the key is turned off and the fire can be played again, but the fire is immediately extinguished, what is going on?

It may be that there is a problem with the engine of the car, and the engine damage will also affect the car from ignition, so you can go to the 4S shop for inspection and maintenance.

It is very likely that the beacon line of your car is aging, so it will not catch fire. At this time, you must go to the repair department to check it and don't ignore this problem.

I think it's probably due to a malfunction in the car's spark plug, which is why there is electricity and oil but it doesn't catch fire.

Hello! The battery is out of power or malfunctioning, and the battery is at low temperature, due to the increase of electrolyte viscosity, the decrease of permeability, and the increase of resistance, which reduces the output power, which makes it difficult for the starter to drag the engine, and cannot reach the minimum starting speed, which affects the engine start. Check the battery voltage with a multimeter or test it directly with a new battery.

2. Refill the fuel in time, and find that there is no fuel in the car because of the wrong instrument display. Some vehicles have inaccurate fuel gauge pointers, and when the fuel gauge is red light, fuel should be added in time. Otherwise, it will be difficult for the vehicle to catch fire if it can't keep up with the oil, especially in winter, when the temperature is very low.

You can press and hold the oil pipe to start and feel if there is oil pressure.

3. If the spark plug is broken, check the spark plug to see if it is aging or heavy carbon deposits, and replace it with a new one if necessary.

4. If the high-voltage line is in poor contact, it can be detected with a multimeter to see if the resistance is normal.

5. If the ignition line is faulty, it can be detected with a multimeter to check whether the circuit is broken.

6. Some old vehicles, oil pipes, etc. are seriously aged, and the vehicle cannot keep up with the oil when it starts, which often leads to no ignition, so it is necessary to step on the accelerator slightly when igniting to make the gasoline circulate faster, so that it is easier to hit.

1. What is the reason why the EFI diesel truck cannot be refueled?

1. The fuel metering function of the vehicle is damaged, which will lead to the inability to add oil, which is generally caused by the serious wear of the internal plunger of the vehicle fuel metering unit.

2. The damage inside the fuel injector will cause the incorrect amount of fuel injection and oil return, resulting in insufficient power of the vehicle, so that the oil cannot be added, and sometimes the diesel pump is damaged will also lead to the inability to add oil.

3. If the connection between the line and the connector is not correct, there will also be the phenomenon of not adding oil, just like the plug of a fuel injector in the engine is loosened, and a cylinder will not start to work, and when the line connection of the car fuel injector is not good, it will also lead to the vehicle not being able to add oil.

4. When the diesel filter of the vehicle is blocked or particularly dirty, it will cause insufficient oil supply to the parts in the vehicle and cause no fire.

Second, how to solve it.

1. When the fuel metering function of the car is damaged, you can go to the repair shop to find a repair worker for repair or replacement, so as to solve the problem of not adding oil.

2. When the inside of the fuel injector is damaged, it can also be repaired or replaced.

3. When you find that the line connection between the line and the connector is not normal, you can repair the line.

4. The diesel filter of the vehicle can be cleaned regularly, and the diesel filter can be cleaned and then installed.

1. See if it is caused by hanging the wrong gear. Some people do not hang the gear in P gear when they stop and turn off the engine, but directly hang it in D gear.

Bit. Because, if you hang the gear in D gear or R gear, there is no way to start the fire, and you can only start the fire if you hang the gear in P gear or N gear. Therefore, when he wanted to start the fire again, he could not start the fire in the first place.

2. See if the car is out of gas. In addition to the battery running out of power, the fire cannot be ignited, and the car cannot be ignited when the car is out of gas. Usually this situation is because the engine is not turned off when you get out of the car, so that the fuel consumption is dried up and the electricity is used up, so the car has no way to ignite the fire.

3. Is there a fault in the gasoline pump? This reason is also somewhat similar to the running out of gasoline. If the starter can run normally when the ignition is ignited, but the car is not on, you need to check the gasoline line to see if there is a problem with the gasoline pump.

4. See if the starter is faulty. The starter is faulty, this problem is very similar to the battery is dead, and it will also cause the fire to not ignite.

5. Is it a throttle?

There is too much carbon deposit.

Many. If there is too much carbon deposited in the throttle, it will also not catch fire. In this case, a slight step on the accelerator can ignite the fire.

6. See if the crankshaft position sensor is faulty. There was damage here, and when the ignition was fired, the engine's computer had no way to receive the signal, and there was no way to control the spark plugs.

Conduct ignition. Hope it helps, hopefully.