Do I replace all the broken ignition coils? Do I need to replace all 4 ignition coils?

Only one or two of the ignition coils are faulty, and the others are not affected. If the other ignition coils are in good condition and the service life is less than 100,000 kilometers, then the faulty ignition coil can be directly replaced, and there is no need to replace all four of them. .

If the ignition coil has been used for a period of time and the service life is more than 100,000 kilometers, it is recommended to replace all the ignition coils even if they are broken. This is to avoid worries about the future. If you only change one, who knows if the remaining ones will also stop working after a while.

Ignition coil replacement process:

1. Open the engine compartment cover and remove the engine cover. At this time, you can see the exposed ignition coils of each cylinder of the engine.

2. Slowly lift the yellow plug in the picture (right), taking care not to break the plug; then push down the black buckle handle, and at the same time slowly pull out the plug outwards (right). Since each cylinder plug has a one-to-one correspondence with its corresponding cylinder, don't confuse it.

3. Use the corresponding sleeve tool to remove the fixing screws of the ignition coil of each cylinder, and pull out the ignition coil.

4. Put the new ignition coils back into the ignition coil holes one by one. While installing them back, make sure that they are stably combined with the spark plug terminals.

5. Use fixing bolts to fix the ignition coil firmly, insert the corresponding ignition coil plug of each cylinder, and push the socket pin inward to the locked position.

6. After the installation is complete, test whether the ignition coil is working normally. If everything is normal, install the engine cover back to the engine to complete.

Precursor of ignition coil failure:

1. With the weakening of the spark-over ability of the spark plug, the combustion of the combustible gas mixture of the engine will be affected, resulting in adverse reactions such as increased fuel consumption and decreased power.

2. The engine lacks cylinders, resulting in severe jitter. If the ignition coil is severely damaged, or the engine lacks too many cylinders, it is likely that the vehicle cannot start normally.