After the car was rear ended, the maintenance quality was too poor and there was damage

The reason why the engine won't catch fire.

The engine does not catch fire and is one of the most common faults in cars. There are two situations when the fire does not ignite: one is that the starting sound of the starter can be heard, but the engine cannot start. The other is that after twisting the key, there is no sound.

The first case is when the starter works, but the engine does not. This is complicated by the fact that it can be caused by one of several failures.

It is rare for two or more failures to occur at the same time, but it cannot be said absolutely.

1) First of all, it may be a circuit or electronic fault. The phenomenon that occurs is:

Very suddenly, without any warning. The faults of the circuit are: fuse blowing, high-voltage coil breaking, low-voltage circuit breaking, center ignition wire falling off, splitter head leakage, and spark plug damage. Electronic failure mainly refers to the loss of function of the computer control board.

2) Then there is the failure of the oil circuit. Flameout caused by oil circuit failure.

There are often signs of engine weakness and stepping on cotton on the gas pedal. Oil circuit failures may occur in the following areas: oil pump failure, oil circuit failure, oil filter blockage, carburetor failure, nozzle damage, etc.

Sometimes it happens that the fuel tank is empty and the owner doesn't know about it. Add a few liters of petrol and you'll be able to solve all the problems.

3) Finally, it can also be a mechanical failure. Common mechanical failures are: time band (chain) breakage, cylinder leakage without pressure, etc.

The second scenario is when even the starter does not work or works barely. At this time, the first thing that needs to be checked is the battery or battery. There are many ways to check, but it's best if you have a voltmeter on hand.

Connect the positive and negative poles of the battery, and then twist the key to ignite. If the voltage indication drops below 8 volts at the moment of power on, there must be something wrong with your battery. It doesn't hurt to have a voltmeter, you can replace it with a small 12-volt bulb and a small section of power cord.

The same is true for the method, if the bulb suddenly becomes significantly darker, it is also an indication of battery aging. In many cases, the battery has failed, but the headlights can still be lit. This is not surprising.

Only at the moment of ignition can the performance of the battery be truly tested. Because this is when it has the most load.

Another simple way is to look at the outer wall of the battery with the naked eye, and if you find that it has expanded and deformed, it means that a new battery is absolutely needed. In addition to the battery, the reason why the starter does not work can be a damaged ignition switch, a damaged ignition relay, or a damaged starter itself.

Also, check the ground line and fuse.

The accident car has a great impact after it is repaired. After repairing, the accident car may not be sold second-hand or can only be sold at a very low price, and the performance will be reduced, and there will be certain safety hazards.

The characteristics of this type of car are: when the vehicle is collided or damaged, it will hurt the beams, frame and other parts, and it needs to be cut and welded before it can be repaired. The appearance can basically be repaired perfectly, but if the body energy-absorbing parts are damaged, they will leave traces of repair.

The first step in introducing the identification of a second-hand car is to look at the appearance, which is not to say whether the car is good or not, but to see how the overall feeling of the car is, as the saying goes, is not the right eye. It's really hard to quantify this, but I can only say it's the first feeling.

The way to see the exterior is to stand one meter away from the four corners of the vehicle, so that the line of sight is level with the waistline of the vehicle. In this way, it is easier to see the condition of the vehicle's paintwork, whether there is any color difference, whether the gloss is consistent, and so on. After looking at the gloss and color difference, let's look at the joints between the various parts of the body.

Mainly check whether the seams are uniform and whether the corners are smooth.

Basically, there is no impact, as long as the original parts are used, there is no problem if it does not involve damage to key components such as chassis and engine gearbox.

From the point of view of **, your BAI accident has a very serious du, and the collision accident is used in the maintenance of the DAO welding sheet metal back to repair the accident part, repair the answer.

After the end, the repair shop must be required to carry out anti-rust treatment on the welded parts, so as not to rust after two or three years of driving, because the steel plate will disappear after high temperature. After repairing, it will generally not have any effect on rust prevention.

This is not a big problem, when you go to get the car, pay attention to check whether the rear two doors and the rear windshield are leaking, and then look at the gap between the trunk and the two rear fenders, and then see if the trunk switch is smooth.

Reasonable, but not legal, the insurance company has regulations, if he wants it, he can ask the insurance company to ask for it.

If the 4S shop repairs it, it will generally replace the original parts, and after repair, there is almost no difference from the original, so there is no depreciation fee.

Normally, after an accident in our vehicle, the value of the vehicle must be lost, especially the major accident that injures the main part of the body, it will definitely depreciate when selling the car, but the depreciation of ordinary cars is very small, so most of them are responsible for repairing the car, but for some luxury cars, because the vehicle is relatively high, the damage is relatively large, and then it is necessary to compensate for the depreciation.

Reasonable, but not legal, the insurance company has regulations, and he can ask the insurance company to ask for what he wants.

If the 4S shop repairs the DAO, it will generally replace the original parts, and there is almost no difference from the original after repair, so there is no depreciation fee.

Normally, after an accident in our vehicle, the value of the vehicle must be lost, especially the major accident that injures the main part of the body, it will definitely depreciate when selling the car, but the depreciation of ordinary cars is very small, so most of them are responsible for repairing the car, but for some luxury cars, because the vehicle is relatively high, the damage is relatively large, and then it is necessary to compensate for the depreciation.