What Causes Reduced Engine Power in the Cruze?

[EmmettLynn]

Here are the specific reasons for reduced engine power in the Cruze: 1. Clogged catalytic converter: A blocked catalytic converter can cause poor exhaust flow, decreased power, and increased fuel consumption. In severe cases, it may lead to engine shaking or even stalling. 2. Dirty air filter: A clogged air filter restricts air intake, reducing vehicle power and increasing fuel consumption, while also directly causing throttle valve contamination and carbon buildup. 3. Faulty spark plugs: Spark plug issues can cause engine idle shaking, noticeable power loss, increased fuel consumption, and may lead to engine misfire symptoms (such as backfiring, black exhaust smoke, or severe vibration). 4. Carbon buildup in fuel injectors: Carbon deposits in fuel injectors result in insufficient power, idle shaking, difficult starting, and increased fuel consumption. Injector clogging is usually caused by carbon deposits from the engine or impurities in the fuel. 5. Throttle valve carbon buildup: Carbon accumulation is the main factor affecting throttle performance. Prolonged lack of throttle cleaning can cause throttle opening errors and allow contaminated air into engine cylinders, leading to abnormal engine operation.