How many spark plugs does a car have?
2 Answers
Car spark plug quantity depends on the number of cylinders, with one spark plug matching one cylinder. The function of car spark plugs is: to introduce the high voltage electricity generated by the ignition coil into the engine cylinder, creating a spark between the spark plug electrode gaps to ignite the air-fuel mixture, thereby enabling the engine to operate. Reasons for car spark plug damage include: 1. Excessive carbon buildup on spark plugs; 2. Cracked spark plug ceramic insulator; 3. Overheating of spark plugs; 4. Electrode erosion. Effects of damaged car spark plugs: 1. Reduced power, decreased shunt resistance, unstable engine operation, resulting in weak throttle response; 2. Significant car shaking at idle when parked; 3. Causes excessive exhaust emissions and increased fuel consumption; 4. Abnormal ignition.
My previous car was a regular family sedan with a 4-cylinder engine, which meant it had 4 spark plugs. Each cylinder is equipped with one spark plug responsible for igniting the fuel to power the car. If the spark plugs age or fail, the car may shake, fuel consumption can increase, or it might even fail to start. I've personally replaced them before—the tools are simple, but the locations are tricky, taking me 45 minutes. Different car models have varying numbers of cylinders. For example, compact cars usually have 4, SUVs with 6-cylinder engines have 6 spark plugs, and sports cars with 8-cylinder engines have 8, increasing maintenance costs. It's important to inspect the spark plugs every 20,000 kilometers, choose the correct model, and maintain them to extend their lifespan and prevent malfunctions.
