What should I do if the car won t start? What is the reason 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.

1. The car is out of gas, the car battery is out of power, the car is seriously carbonized, the car exhaust pipe is blocked, the battery problem caused by environmental factors, etc., anyway, most of the reasons are because of the car battery;

2. It must be a problem for the car to start when it runs out of fuel, which is also a common mistake made by many careless car owners, so it is necessary to check the fuel of the car before departure, and if the fuel is insufficient, it needs to be replenished in time to avoid the situation that the car cannot be started because of insufficient fuel;

3. Some careless car owners use the on-board electrical appliances improperly, or forget to turn off the headlights after driving at night, resulting in a battery loss overnight, and then the car will not start due to the battery running out of power when using the car;

4. If the car is not maintained regularly, the car will seriously deposit carbon, which will affect the use of the car, and there will be occasional shaking when the car is idling. Car owners can be relieved by cleaning the throttle or cleaning the intake pipe, and they should also pay attention to their driving habits when using the car daily, so as to reduce the generation of carbon deposits in the car;

5. After the exhaust pipe of the car is blocked, it is also difficult to start, which is due to the blockage of the exhaust caused by three-way catalytic crushing or the deformation of the exhaust pipe caused by external force, so when the car is usually used, it is necessary to check the car to avoid failure when driving.

If the car fails to start, it is necessary to identify the cause of the fault, check the ignition timing, detect the starting system, and detect the quality of the electric spark.

The car won't start, what can you do as a mechanic? It may be thought that the battery is dead.

1. Take the wire: This is a necessary item for the car to take the electricity, do not take two wires to make do, because the instantaneous current of the vehicle at the start can reach 200-600A, and the diesel car even reaches 1000A, if it is calculated, 10 square copper wires can ensure the smooth and safe start, so the car battery connection line must buy the right brand, the quality is the best, do not try to be cheap. This is one of the must-have items in the car, once the battery is out of power, you can take it out and use it, and you can also help others when you don't use it.

2. Emergency power supply: This is a new type of power bank like a thing, there are two kinds of lead-acid and polymer lithium battery, which can help the vehicle with a loss of power to start, and can also have lighting, charging mobile phones and multi-functional supplies used with an inflatable pump to inflate the car. And it is generally portable, very lightweight, if you have it, you don't have to ask others for help.

Be sure to charge it in time after use and keep it full of power to deal with emergencies.

3. Positive, first connect the positive: first turn off all the electrical equipment on the car, make the key in the OFF position, open the cabin cover to find the battery, there are positive and negative poles written on the battery, generally the red "+" sign is the positive pole, and there are generally two wires, at this time, take out the red one, open the battery cover, pinch the clamp on the head to clamp firmly the positive pole of the battery of the electric car, and the clamp at the other end to clamp the positive pole of the battery of the rescue vehicle. Be sure to connect the positive electrode first, then the negative electrode, do not reverse the order, and do not use the battery clamp to touch anywhere except the battery pile head.

4. Negative connection, negative connection: After the red positive electrode is connected, take out another wire, first clamp the negative pole of the tram battery, the negative electrode is generally black "—" number, and then pinch the other end of the clip, from beginning to end the clip do not touch other places, to clamp the negative pole of the rescue vehicle battery, when the connection will pop out of the electric spark, please don't be afraid, this also shows that you are right. The reason why the negative electrode is not connected first is because the whole vehicle is basically a negative electrode (that is, commonly known as "tie iron"), if the negative electrode is connected first, when connecting the positive electrode, the clip will cause a short circuit and burn the parts on the car when it touches any conductive place in the body.

5. After starting the vehicle, first remove the negative, and then dismantle the positive: after the battery is connected, the rescue vehicle will first ignite and charge the battery, and then the no tram enters the vehicle to open the key, at this time the instrument light will be lit smoothly, and then try to ignite (not more than 5 seconds), if it fails to start smoothly, step on the accelerator of the rescue vehicle, and the speed is kept at about 2500 rpm, and then the tram is ignited again, if the starter is no problem, the car has oil in the case of general can be started smoothly, after the non-electric vehicle starts, Remove the negative clamp first, then remove the positive clamp, for the same reason as why the negative pole is followed by the fourth one.

The positive and negative poles of the battery must not be reversed, and the order of assembly and disassembly should be strictly in accordance with the order of first connecting the positive and then the negative, and the first dismantling and then the positive.

Hello, the vehicle can not start generally because the battery has no power, if the engine can turn but can not start, it may be that the crankshaft position sensor is broken, the fuel pump is broken.

What is the reason for the difficulty in starting the car in winter? Both new and experienced drivers need to know.

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.

I would like to recommend to you a kind friend "Baige", he is very enthusiastic in the service attitude, and he is also well-known in the battery industry, and his contacts are very broad. This is my personal story, and thanks to the help of this friend, I was able to get through this difficult time.

I used to be in the flooring business, but due to the real estate control policy, the real estate market was sluggish, and those who did building materials were also implicated. The business deteriorated, and I couldn't stand it anymore, so I withdrew. After closing the business, I finally don't have to be busy every day, and I have a comfortable and relaxed life.

Hehe, people, it's okay to rest for a while, but I have nothing to do, and I'm quite depressed after a long time. I couldn't stay idle anymore, so I drove my beloved car and went out to investigate the market to see if there were any good investment opportunities. First stop, Suzhou.

Hey, I really responded to the sentence that the house leak was even rainy, and the boat was late and encountered a head wind, who knew that on the first day I went out in Suzhou, I encountered an embarrassing thing. The car broke down on the road, and after inspection, the battery was dead. What can I do, I can't go to the village or the store, where to buy batteries.

And I don't know the place well, and I can't even find a helper, so I'm very frustrated. In a hurry, I remembered my friend Baige, who made batteries, because he was making batteries, and asked if he could help me think of a way. **After getting through, I described the problem of the car to him, and then, he told me not to panic, he tried to help me contact my friends here in Jiangsu, ** turned it off!

Fifteen minutes later, the strange ** called, asked me if the car battery was broken, and then confirmed that I was in that position, and after another fifteen minutes the person came, to help me change the battery, when I lit the car, to confirm that the car can be used normally which friend left.

We usually don't check whether there is a problem with the car battery, if on the way, the ignition does not ignite, the car can not start, and there is no car maintenance nearby, don't panic I recommend to you a friend in the battery industry - Baige, he will be very enthusiastic to serve you.

Aqing Q&A Episode 18 Car Startup Problems.

What's going on when the car doesn't start? Is it because of the engine?

There may be several reasons why the car cannot ignite, and the steering wheel is in a locked state: when the steering wheel is not corrected when parking, it is easy to have the steering wheel locked, resulting in the key being inserted and not being able to screw, and the car can not be lit. 2

The battery of the car has a power loss: the battery of the car is also a consumable, and it is recommended to replace the battery once in 2-3 years. If the battery is out of power and cannot ignite, you can take the method of taking electricity, first of all, the front of the two cars "face to face" (the two cars can be as close to each other as possible), and then turn off the rescue vehicle, so as not to burn the battery line due to excessive current, the electrical switches of the rescue vehicle are turned off, open the engine compartment of both sides (some car batteries are placed in the rear trunk, such as BMW), and find the positive and negative poles of the batteries on both sides (with red "+" for the positive pole and black "-" for the negative pole).

Remember the positive and negative poles of the vehicle, don't make the wrong connection.

Next, how to correctly connect the wiring method is: first connect the positive end of the battery of the loss-stricken vehicle with the positive end of the rescue vehicle battery; Then connect the negative pole of the rescue vehicle battery to the wire and then connect it with the iron sheet of the body of the vehicle with power loss (try not to connect the negative electrode, it is easy to produce sparks, and it will cause damage to the battery in serious cases.

Black is the negative wire, and red is the positive wire.

After making sure that the wires are connected correctly and that the contact is good, start the rescue vehicle; Let it run for a few minutes before charging the vehicle with a loss of power. Then start the loss-free vehicle.

If the loss of power vehicle can not start, this is to give the throttle of the rescue vehicle to some oil, and then to start the loss of power vehicle, remember not to force the start, pay attention to the start of the interval, if it can not start, it is necessary to consider whether the wire is too thin, the current caused is not enough.

Remember the positive and negative pole markings on the battery.

When the vehicle is started, the battery clamp can be removed at this time, and the order of taking power should be:

1. First remove the negative pole of the rescued vehicle with the iron wire, and then remove the negative pole wire of the rescue vehicle;

2. Furthermore, remove the positive wire of the rescue vehicle, and then remove the positive wire of the rescued vehicle.

Remember the order of unplugging 4 4

If the motor fails, or the fuel filter surface is clogged and the car doesn't start, it's time to ask a professional to solve it.

Hello dear for your question. Pro, the car can't start: 1. Human-powered cart:

The ignition switch should be turned on before the vehicle is pushed, after reaching a certain speed, the transmission should be put into gear, quickly release the clutch pedal and refuel, once the engine is started, the clutch pedal should be quickly pressed, and the throttle should be controlled at the same time, so as not to let the engine turn off, and then slowly stop the car. 2. Vehicle traction: use the appropriate length of the towing rope, and tie the two ends firmly, the front car starts slowly, the rear car driver adjusts the speed to the second gear, the rear car steps on the clutch, and slowly starts the vehicle, after the vehicle starts, the two cars slowly approach the roadside to park.

3. Car emergency power start: use the battery of the car emergency power supply to clamp the positive and negative poles of the car battery Kaihe, insert the other end of the battery clamp into the car emergency power supply, turn on the power switch, ensure that the connection is normal, get on the car and start the car, and take off the power supply after starting.