What Causes Difficulty in Starting a Cold Car?

[McAlexa]

Difficulty in starting a cold car is due to: 1. Engine temperature being too low: The internal temperature of the engine is insufficient, and the internal oil and lubricants have not reached their optimal lubrication state. In low-temperature conditions, the engine's ignition capability decreases, leading to difficulty in starting; 2. Excessive engine carbon deposits: Prolonged use of the engine without timely cleaning leads to carbon buildup, which can clog the exhaust pipe and absorb fuel, reducing the engine's efficiency; 3. Aging spark plugs: Long-term use of spark plugs can lead to aging, causing deviations in the spark plug's ignition gap. The replacement cycle for spark plugs is approximately every 20,000 to 30,000 kilometers; 4. Faulty water temperature sensor: If the water temperature sensor malfunctions, the vehicle's computer will make incorrect judgments, resulting in reduced fuel injection by the engine. This leads to insufficient engine power and prevents the engine from reaching an optimal operating state.