What Causes a Car's Power to Decrease?

[VanZoey]

Here are the specific reasons for a car's power decrease: 1. Clogged three-way catalytic converter. A clogged three-way catalytic converter can cause poor exhaust flow, reduced power, increased fuel consumption, and in severe cases, engine shaking or even stalling. 2. Dirty air filter. A dirty air filter can result in insufficient air intake, leading to decreased car power and increased fuel consumption, and can easily cause a dirty throttle body and carbon buildup. 3. Faulty spark plugs. Faulty spark plugs can cause car idle shaking, noticeable power decrease, increased fuel consumption, and may lead to a series of symptoms of engine misfiring (such as backfiring, black smoke from exhaust, severe vibration, etc.). 4. Carbon buildup on fuel injectors. Carbon buildup on fuel injectors can cause insufficient car power, idle shaking, difficulty starting, and increased fuel consumption. The main reasons for clogged fuel injectors are carbon deposits from the engine accumulating on the injectors or impurities in the gasoline blocking the injectors. 5. Carbon buildup on the throttle body. Carbon buildup is the main factor affecting the throttle body's operation. Not cleaning the throttle body for a long time can cause errors in the throttle opening and allow air with impurities to enter the engine cylinders, leading to abnormal engine operation.