Turn on the glow plug switch, if the indicated resistance reaches the red hot time within 20-30s, the preheating circuit is working normally; if the indicated resistance is not red hot, it indicates that there is an open circuit in the circuit or the indicating resistance is blown; If the indicating resistance reaches red heat for too long, it may be due to insufficient battery power, loose joints or individual glow plug heating elements; if the indicating resistance reaches red hot for too short a time, it indicates that there is a short circuit in the wiring or individual heater Short circuit, check the available table of glow plugs. When the resistance of the glow plug is about 4.591, it is qualified. If the resistance is too small, it means that there is a short circuit; if the resistance is large, it means that the circuit is open.
The glow plug is an important part of the automobile ignition system. The glow plug is a supplementary heater used in the diesel engine starting process. When the diesel engine starts, because of the low temperature outside, it depends on the process of air intake, compression, and exhaust to start the engine. At this time, supplementary heating is needed. This device is installed in the preheating chamber above the engine cylinder, below the fuel injector. When the diesel is sprayed and atomized, it will pass through the glow plug and be heated. When the oil and gas are compressed, it is easy to start the engine and achieve normal engine operation. According to the heating time of the glow plug, it can be divided into a slow glow plug. According to materials, it can be divided into metal glow plugs and ceramic glow plugs.
