How to Determine When to Replace Spark Plugs?

[JaxsonDella]

Methods to determine when to replace spark plugs: 1. Difficulty in starting the vehicle, caused by excessive carbon buildup on the spark plugs leading to increased spark plug gap, resulting in abnormal vehicle startup; 2. Reduced engine power, leading to decreased performance; 3. Incomplete combustion of the air-fuel mixture in the engine, causing excessive exhaust emissions; 4. Increased fuel consumption due to incomplete fuel combustion, resulting in higher-than-normal fuel consumption. Spark plugs are a key component of a car engine's ignition system. Gasoline engines are equipped with spark plugs, one per cylinder, and some high-speed gasoline engines even have two spark plugs per cylinder.