What are the symptoms of a faulty CNG ignition advance device?
2 Answers
It will cause incorrect ignition timing, resulting in poor engine combustion, smoke emission, and insufficient power. In severe cases, the engine may fail to start. Below are the functions of the ignition advance device: 1. The ignition advance device appropriately advances the ignition timing without altering the original engine structure to ensure stable combustion of natural gas and improve engine power when using natural gas. 2. The ignition advance controller allows different fuels to burn and automatically changes the ignition advance angle to ensure the engine operates at the optimal ignition advance angle under different speeds. 3. Additionally, without changing the original engine compression ratio and combustion structure, precise control of different ignition advance angles is achieved through microcontroller control based on the position of the switch.
When the CNG ignition advance device in my car failed, the vehicle would shake violently after starting, especially struggling to accelerate after refueling, as if being held back by something, jerking intermittently during takeoff. Additionally, the throttle response became sluggish, and fuel consumption inexplicably increased by nearly 20%. On the highway, the power felt weak, lacking the smoothness it used to have. After consulting a repair shop, I learned that the faulty ignition advance device caused timing errors in combustion, affecting the overall efficiency of the CNG system. This experience taught me that CNG vehicles require high precision in ignition timing. Once components age or wear out, they need to be checked early to avoid bigger issues. Now, during routine maintenance, I always ask the mechanic to inspect the ignition components to ensure safe driving.
