Why does the Wuling Zhiguang make abnormal noise when starting and fail to ignite?
2 Answers
Failure to ignite indicates insufficient engine power, which may be caused by the following reasons: 1. Insufficient fuel supply: The fuel system should inject well-atomized fuel into the cylinder at the right time and in the right amount. If there is a fault in the fuel system, the amount of fuel injected into the cylinder is reduced, leading to less heat generated by combustion. When the heat is insufficient to meet the engine load requirements, the engine will lack power. 2. Influence of air intake: The combustion of fuel in the cylinder mainly results from the chemical reaction between carbon atoms in the diesel and oxygen atoms (generating carbon dioxide), which releases heat. If the air intake is insufficient due to a clogged air filter reducing the air flow cross-section (for engines with turbochargers, a faulty turbocharger can also reduce air intake) or issues with the valve train, the carbon atoms in the fuel cannot fully react with oxygen atoms, resulting in reduced heat release and insufficient engine power. 3. Impact of ambient temperature: High ambient temperatures often cause engine overheating. Under the combined effect of high ambient temperature and engine overheating, the air expands, affecting the engine's air intake and reducing engine power. Conversely, when the ambient temperature is too low, it can lead to poor fuel evaporation in the cylinder, causing incomplete combustion, which means the working medium in the cylinder generates less heat.
That Wuling Zhiguang makes a strange clicking sound when starting and fails to ignite. I've encountered this issue several times, and it seems quite common. Generally, the problem lies in insufficient battery power; low voltage prevents the starter from turning, resulting in that abnormal noise. Alternatively, the starter itself might be aging, with worn gears causing it to jam. Another possibility is the spark plugs not igniting in time, preventing the engine from starting. You should quickly check if the battery terminals are loose and measure the voltage with a multimeter—if it's below 12 volts, it's time to replace the battery. A faulty fuel pump could also be one of the reasons, as poor fuel supply can lead to ignition failure. Remember to turn off electrical devices before parking and shutting off the engine to extend the battery's lifespan.
