How to replace the ignition coil of a car, how to replace the ignition coil yourself

The ignition coil is composed of the main coil, the secondary coil, the magnetic core, the switching triode and other auxiliary components, the main coil is charged by the battery, the secondary coil is discharged and the spark plug is ignited, and the triode is responsible for switching. The charging time is controlled by the battery voltage and engine speed to ensure that the energy of each charge is consistent, the ignition coil has two kinds: 3 wires and 4 wires, 3 wires are positive and negative for the power supply, and the switch controls the ECU instruction, and the 4 wires have an additional ignition detection line, which can detect whether the spark plug is ignited and whether there is a discharge current in the secondary coil.

To put it simply, the ignition coil is a transformer, that is, the voltage of tens of volts is raised to tens of thousands of volts, but the voltage input to the primary coil is provided by the electronic ignition.

2: The reason why the ignition coil burns out.

Mainly the aging breakdown of the insulation layer or the damage of the switching triode, the large spark plug gap will lead to the main coil load, large heating, fast aging of the insulation layer, small spark plug gap leads to large discharge current of the secondary coil, fast heating, fast aging of the insulation layer, the assembled ignition coil may have poor durability of insulating materials, large internal resistance of the coil and fast heating, and the life of the transistor will be shorter if the quality is not high.

If it is always burned out, and it burns out soon after replacement, and why?

Let's take a look at the problem of the generator first, if the power generation is too high, the load of the ignition coil is too heavy, it is easy to burn out, but if the power generation is too high, then the body electrical appliances, such as light bulbs, will often be damaged; Of course, the quality of the accessories is not ruled out, so it is best to measure the power generation first.

If the spark plug gap is too large, adjust the gap or replace the spark plug.

The quality of gasoline is not good, try to change to high-grade gasoline.

If the compression ratio of the cylinder is wrong, adjust the compression ratio.

If there is a program failure in the computer version, you can go to the repair shop and use the computer to test the car and clear the wrong information. If it doesn't work, it may be that there is a problem with your car's transmission.

The power supply voltage is unstable.

The resistance of the high voltage is abnormal, replace the high voltage line.

There is a short circuit in the secondary.

The ignition coil is overheated due to the high primary current of the ignition controller.

It does not work well when subjected to high temperature and high pressure waves.

There is a small chance that it is a problem with the coil itself, so you can try a different brand.

The ignitor manifold does not work well.

Hello, this depends on the specific model, the ignition coil position is different, and the replacement steps are also different.

Just take it off and replace it. **If you change the ignition coil, it is not particularly troublesome, and 120 is a bit high if it is a working hour.

Is there a quick way to replace the ignition coil? Many car owners won't, and the car repairer answers questions! Automobile maintenance car ignition coil.

Hello, if you want to replace the ignition coil by yourself, you need to unplug the power supply plug of the ignition coil, and then remove the ignition coil fixing screw to replace it.

Before dismantling, remember the position order of each high-voltage line, and the new high-voltage line is not plugged in correctly, and it cannot catch fire. It's really not okay to take a ** with your mobile phone, and then you can pull out the wire and remove the screws.

1. Open the ignition coil cover on the top of the engine;

2. Use an inner pentagonal wrench to remove the ignition coil fixing screw;

3. Remove the ignition coil power plug;

4. Use a screwdriver to gently warp it up and take out the ignition coil;

5. Put in the new ignition coil and tighten the screws;

6. After connecting the power plug, see the top cover cover.

It is the basic operation procedure to disassemble the components of the engine first, then unscrew the screws, remove the power plug, pry around the ignition coil, remove the parts inside, and so on.

First of all, you need to hit the ** coil cover, check the ignition wire, fix the screws, then remove the power plug, take out the fire coil, and then put in the new fire coil and fix the screws, and arrange the cover.

The first thing is to open the cover of the car, and then to separate the wiring, and be sure to put the car in a state of stopping, and then find the ignition line to remove.

1. See if the engine can start normally.

See if the cold start is smooth, and if there is anything particularly obvious"Frustration", can it be ignited normally.

2. Look at the engine shake.

Keep the car idling, if the engine can run smoothly, then the spark plug can work properly; If it is found that the engine is shaking intermittently or continuously, it will be abnormal"Sudden protrusions"sound, it means that there may be a problem with one of the spark plugs, and the spark plugs need to be replaced.

Hello, if the vehicle is due to the lack of cylinder jitter, you only need to unplug the ignition coil plug of each cylinder Unplug the cylinder Unplug the cylinder The engine has not changed which cylinder is missing If you pull out a cylinder, the shaking is more obvious or even stalled, which means that the cylinder is good, if it is judged that the ignition coil is faulty, you need to unplug the ignition coil that has not changed, and any of the other three cylinders are reversed, for example, you pull out the 2 bars and do not respond, you switch with the 3 bars, or 2 cylinders, no response, indicating that the ignition coil is good If the 3 cylinder is unplugged and there is no response, it is a problem with the ignition coil.