What Causes Slow Engine Cranking in Cars?

[SanRuby]

The reasons for slow engine cranking in cars are as follows: 1. Slow cranking in winter: During cold weather, the engine block temperature is low during cold starts, making it difficult for fuel to atomize. This results in insufficient mixing of fuel injected into the cylinders with air, causing a sharp drop in gasoline vaporization rate. Additionally, engine oil viscosity increases in winter, raising engine operating resistance and leading to difficult or failed starts. This is a normal phenomenon. 2. Slow cranking in summer: Worn-out spark plugs or excessive spark plug electrode gap can cause slow cranking. Cold starts require higher ignition energy; if spark plugs are faulty, they cannot properly ignite the air-fuel mixture in the cylinders, naturally making starting difficult. The solution is to replace the spark plugs.