What is the reason why Wuling Zhiguang is difficult to start when cold but normal when hot?
1 Answers
Wuling Zhiguang is difficult to start when cold but normal when hot for the following reasons: Poor fuel quality: Poor-quality fuel often has poor volatility, especially in winter when the temperature is low. During cold starts, the engine block temperature is low, making it difficult for the fuel to atomize. This affects the proper mixing of fuel injected into the cylinder with air, leading to difficulty in starting or even failure to start. Lower temperatures: The colder it is, the more fuel is required for a cold start. Carbon deposits can significantly affect whether a cold start is successful or not. Carbon buildup in various parts of the engine can negatively impact its normal operation. For example, excessive carbon deposits in the combustion chamber can increase the compression ratio, creating multiple hot spots that lead to pre-ignition and knocking, reducing the engine's lifespan. Carbon deposits on the valves and valve seats can cause the valves to not close tightly, leading to air leaks, difficulty starting the engine, weak operation, and accelerated valve erosion. Spark plug failure: Delayed replacement of spark plugs is another common issue. Cold starts require higher ignition energy, and after a certain mileage, the electrode gap of the spark plug widens. If this gap exceeds the standard, the spark energy produced will be significantly weakened, making it difficult to ignite the air-fuel mixture in the cylinder (commonly known as misfiring), naturally making it very hard to start.
