What Causes a Car to Misfire?

[LeDeclan]

Car misfiring is caused by clogged fuel injectors; faulty spark plugs, ignition coils, and cylinder wires. Clogged Fuel Injectors: After prolonged use, fuel injectors may become clogged, leading to issues such as altered spray patterns, delayed solenoid valve operation, or excessive fuel injection. This can result in an overly rich air-fuel mixture, causing symptoms like backfiring and engine shaking. If a single injector is clogged, it may also cause intermittent misfiring and car vibration. Faulty Spark Plugs: Spark plugs are well-known wear-and-tear components with a limited lifespan. For example, standard copper-core spark plugs last about 30,000 kilometers, platinum spark plugs can last up to 80,000 kilometers, and iridium spark plugs may last 100,000 kilometers with proper use. However, even if a spark plug hasn't reached its expected lifespan, it can still fail and cause misfiring. Faulty Ignition Coils and Cylinder Wires: Each cylinder's spark plug is connected to an ignition coil and cylinder wire. If these components fail, the spark plug won't fire, and the cylinder won't operate, resulting in misfiring symptoms.