What are the reasons why the car won t start?

There are several reasons why the car won't start: one. No oil. Two. Power. Three. No air intake.

Let's analyze these four items approximately:

One. No oil.

The reasons for the failure are:1The oil pump relay is working poorly. 2.The oil pump is not working well. 3.Out of gas.

Fault Detection: 1Detection of oil pump relays:

Turn on the key switch and don't hit the motor, you will hear a click, which means that the relay is working properly! If there is a continuous clicking sound, check whether the tie wire is loose. If the relay is judged to be damaged, the light relay can be interchanged with the oil pump relay.

Drive to the repair shop and buy a new relay.

2.Detection of oil pump: Generally, it is checked with an oil pressure gauge, because it is self-excluded.

There is no oil pressure gauge! The easiest way to do this is to remove the tubing and turn on the key switch on the position. Do not start the motor.

If the oil pipe is injected, it means that the oil pump is normal. On the contrary, it is not normal.

Two. Power. Cause of failure:

1.The head of the battery pile is loose. 2.

The high-voltage ignition coil is damaged. 3.The cylinder line is damaged.

4.Whether the starting relay is plugged in properly or not, it is damaged. 5.

Whether the insurance is burned out. 6.Whether the motor is working properly.

7.Whether the main output cable of the computer case is loose.

Fault Detection: 1Detection of loose battery pile head: observe whether the instrument is displayed, if the whole car has no electricity, open the hood, and observe whether the battery pile head connection is loose and oxidized. Loosen it with a wrench, and pour boiling water on the pile head for oxidation.

2.Detection of ignition coil: You can use a multimeter to check the resistance value of its primary and secondary coils, which should be within the conforming range, and the secondary resistance should be larger than the primary resistance!

But that's not sure if it's in good condition! Unplug the cylinder wire, observe it for flashover, and see if there is any leakage in the insulation! The jumping fire should be blue, and the sparks are thick and long!

3.Detection of steel wire: check the resistance value with a multimeter, which should be within the load range. Unplug the cylinder cord and observe it for a flashover. Or skip the fire and replace.

4.Detection of starting relay: There is a problem with the general relay, and there is no response when hitting the motor. Plug and unplug the relay again to see if it starts normally! Replace the relay or motor shorted.

5.Detection of the fuse: Open the fuse and observe whether the fuse indicator is normal and whether the fuse is burned. Replace the fuse.

6.Motor detection: mainly listen to whether the sound of the motor is normal. If the carbon brush of the motor is severely worn, it can be temporarily activated by hitting the motor with a hammer. Go back to the repair shop for replacement.

7.Whether the main output line of the computer box is loose: check whether the plug-in of the computer box and its wiring and each sensor is loose. Fastening is recommended.

Three, no air intake.

Cause of failure: Damage to the eccentric wheel and wear of the eccentric shaft, resulting in the intake and exhaust valves cannot be opened and closed.

Troubleshooting: Call a tow truck!

If it helps you, please light it up, thank you!

The reasons for poor start may be: 1. The spark plug needs a higher ignition energy when the cold car starts, and the electrode gap of the spark plug will become larger after using a certain mileage. 2. Carbon deposits on the throat wall of the intake manifold of the cleaning throttle will affect the air intake, and carbon deposits behind the valve will adsorb fuel and affect gasoline atomization.

If carbon deposits are detected, clean the inlet tract. 3. Check the gasoline pressure: The pressure of the gasoline pump is low, which leads to insufficient fuel supply and difficulty in starting. In this case, replace the gasoline pump or open and close the electric door several times to make it easier to start when the pressure of the gasoline pipe increases.

4. It is possible that the weather is cooler, and the mixed gas inside the engine is not atomized well.

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.

There are several reasons why the car won't start

If the battery fails, the battery loses power, the starter cannot operate, and the battery is replaced.

If the starter fails, the engine flywheel cannot be rotated, and the starter is replaced at the maintenance mechanism.

If the fuel system fails, then the car will definitely not start, go to the 4S shop to overhaul the fuel system.

If the ignition system fails, the car cannot be started, and the ignition system is overhauled at the maintenance facility.

There are many reasons why the car cannot start, it may be the battery power loss, fuel injection system, ignition system, anti-theft system, etc., you need to check to know what the problem is.

The reasons for the failure are:1The oil pump relay is working poorly. 2.The oil pump is not working well. 3.Out of gas.

The reasons why a car won't start are usually motor failure, oil pump failure, ignition system failure, fuel injection system failure, computer module failure, and so on.

Introduction: When we want to drive out, the car often fails to start, so what is the reason why the car cannot start? I will introduce it to you below, I hope it will be helpful to you!

1. Forget to close the anti-theft dark switch you added, cut off the oil or fire, this is the most stupid but the most effective anti-theft means, car thieves can't think of it at all.

2. The key equipped by yourself does not have a chip (coil), and the anti-theft system works. Some car owners and friends don't know that the key is put in the chip, lost a key, and found a locksmith to match an ordinary key without a chip.

3. After starting, the smart key is inadvertently taken away, and it can not be started again when the engine is turned off, because the PESP system cannot detect the legitimate key, the operation of pressing the start switch is invalid, and the starter will not run.

4. If the engine computer and PEPS system do not receive the brake switch signal, the system will refuse to provide a start signal for the starter.

5. The automatic transmission vehicle is not in neutral (N gear) or parking gear (P gear), which is also a safety setting, such as no N gear or P gear. signal, in order not to power the starter to start the belt to prevent starting in other gears, so that the vehicle moves.

6. The manual transmission vehicle is not in neutral, and now many manual transmission vehicles such as the gear lever is not in the neutral position, that is, the engine computer does not receive the neutral signal, and the starting opportunity is not reflected.

7. The manual transmission vehicle did not step on the clutch, for safety, and also for the starter load to be smaller when the morning banquet started, if some vehicles do not step on the clutch pedal, the clutch switch is not closed, then the starter will not run.

8. For vehicles with diesel engines, the ambient temperature is too low, the fluidity of diesel becomes poor, and the engine cannot be started.

9. Inferior fuel is added, and when the cool car is started, due to the factors of cylinder pressure, speed and temperature, it is difficult to ignite the inferior fuel and cannot be started.

10. The fuel tank runs out of fuel and cannot start, which seems to be a ridiculous behavior of the mentally retarded, but this situation happens every year, and it is indeed speechless.

11. The battery is slightly fed, and the speed of the starter is OK, but because the voltage is lower than the minimum voltage of the computer when starting, the engine computer does not work and cannot be started. In the past, it was used in Japanese cars, but now it is rare to see this phenomenon due to the advancement of technology.

Hello, the car can not start this situation, is divided into two aspects, the first is that the vehicle starts without any response, then this situation 1: first of all, you need to check whether the battery loss of electricity conduction is caused by this phenomenon? If the battery is out of power, you need to charge the battery or replace it with a new one.

2: In the case of making sure that the battery does not lose power, focus on checking whether the vehicle starter is a problem or whether the anti-theft is locked, 3: If there is a problem with the starter, you need to check the corresponding control circuit of the starter or replace the starter.

4: If there is a problem with the anti-theft system, you need to re-do the anti-theft matching. The second major aspect is that the vehicle engine can turn, but it does not catch fire, so this situation is to focus on checking, 1:

Is it that the fuel pressure of the gasoline pump is insufficient or the engine of the vehicle is not ignition, 2: If the pump oil pressure is insufficient, the gasoline pump needs to be replaced in this case. Check the fuse or wiring of the gasoline pump.

3: If it is not ignited, focus on checking the crankshaft position, sensor and ignition coil. The above two aspects of Gao Yun's skin trembling are the relevant reasons why the vehicle cannot be started, as well as the solutions, it is recommended to make a relevant reference!

Hello, I wish you a happy family, if necessary, you can continue to consult, I will always wait for you to reply to kiss Kiss.

The reasons why the car won't start are low battery, faulty spark plugs, faulty fuel system, etc. The specific reasons are as follows: Low power consumption:

The spark plug is the most important component in the ignition system of a gasoline engine. If the spark plug fails, the car will naturally not start, so check the fault in time. Fuel System Cavity Belt Failure:

When the car won't start, you need to check if the car's fuel supply system is working properly. For example, once this system fails, it will not be able to supply fuel, which will affect the normal start of the car.