When there is a certain fault in the car, the car friends will not go to their own detection, troubleshooting and so on. Here are some common fault analysis about the car ignition coil arranged by Xiaobian for the car friends. The car friends need to understand this problem, and when there is a certain fault in the car, they will not be helpless.
Ignition coil failure
If the ignition coil is used improperly, it will cause damage to the ignition coil. Therefore, the following points should be paid attention to: prevent the ignition coil from being heated or damped; do not turn on the ignition switch when the engine is not running; frequently check, clean and fasten the circuit connector to avoid short circuit or grounding; control the engine performance to prevent high voltage; do not hang the spark plug for a long time; The moisture on the ignition coil can only be wiped dry with a cloth, and must not be baked with fire, otherwise the ignition coil will be damaged.
Visual judgment of ignition coil fault: observe the appearance of ignition coil, and replace it if there is any abnormal material overflow, insulation cover or shell rupture, and ablation trace at high-voltage output end.
Phenomenon 1: glue overflow
Phenomenon 2: Burst
Phenomenon 3: ablation of high pressure connecting pipe
Phenomenon 4: high pressure nozzle ablation
2、 High pressure fire test:
During the high-pressure fire test, confirm whether the control signal is normal. At the same time, insulation protection shall be done well, and direct contact with high-voltage line by hand is easy to cause electric shock.
3、 Replacement method:
1. The coils with the same specification and good performance are used to replace the coils with possible faults for comparative judgment. If the fault is eliminated after replacement, the replaced coil may be damaged.
2. When using this method, if the unreliability of plug connection is corrected during reassembly, or the leakage damage point of high-voltage line and plug is changed from the previous easily discharging connection point due to reassembly, it may affect the judgment of coil. At this time, the coil can be installed on other vehicles for fault recurrence and final confirmation.