Ignition coil, as the name implies, is a device that provides ignition energy. We know that if the car wants to go, the engine has to work, and the power for the engine to work comes from the combustion of the mixture in the cylinder, and the energy to ignite these mixtures is transmitted by the ignition coil, but it is the spark plug that does it. If you find the following malfunctions in the car, you can judge that there is a problem with the ignition coil.
1. There is no response after loading, and the engine cannot be started
1. The car plug and the coil socket are in poor contact, especially when the high-voltage line does not work with the ignition coil in the same car.
2. The primary circuit of the ignition coil is broken and cannot work.
3. The ignition coil module is damaged after working and cannot work.
2. Engine jitter, body jitter
1. The low-voltage plug of the ignition coil and the external circuit, the high-voltage output and the high-voltage line are not in good contact, and the circuit of the ignition coil is not smooth, which affects the normal use of the ignition coil.
2. The engine lacks cylinders, and only some of the ignition coils in the cylinders are working.
3. The spark plug has serious carbon deposits, which makes it difficult to penetrate the spark plug gap. The spark plug should be replaced at 30,000 kilometers, and the TSI must be replaced at 20,000 kilometers.
Three, other conditions and failure reasons:
1. The spark plug is short-circuited, which will directly cause the ignition coil current to increase and short-circuit.
2. An open spark plug (more carbon deposits) will cause the ignition coil to increase its load and cause a malfunction due to long-term overload.
3. The high-voltage line is short-circuited to the ground (ironing), which will cause the ignition coil current to increase and short-circuit.
4. The open circuit of the high-voltage line will cause the high voltage generated by the ignition coil to be unable to release, and the accumulation of voltage will discharge to the ground and cause a malfunction.
5. The high voltage of the power supply will cause excessive current in the primary circuit, abnormal heating, and bursting of the ignition coil.
If only one ignition coil fails, and the remaining three cylinders work normally, it is not a problem to force emergency driving, but it is very unfavorable to the car's engine, base and connecting parts. An auto repair master at a designated service station in Bora advised the car owner to temporarily stop using the vehicle with a lack of cylinders. If more than one cylinder of the ignition coil is burned out, it is recommended to stop driving immediately.
In addition, driving a vehicle that lacks cylinders due to a malfunction of the ignition coil is very detrimental to driving safety. In the uphill section, especially on the sections that need to be "slope up", the engine load of the cylinder-less vehicle will increase, and the body shake will be more obvious. It is very prone to instantaneous deadfire. The driver is prone to panic, slipping and even causing accidents. If you have to move the vehicle, you should keep the speed above 2500 rpm as much as possible.