What are the reasons for severe car shaking and inability to accelerate?

[VonRebecca]

Car shaking severely and inability to accelerate can be caused by the following reasons: 1. Dirty air filter: The air filter is designed to protect the engine and reduce wear. It should generally be replaced every 10,000 kilometers. If not replaced in time, insufficient air intake can cause low idle speed, leading to engine shaking. Simply replacing the filter can solve this issue. 2. High-voltage line break: A high-voltage line break refers to the breakage of the wire core inside the high-voltage line, which can affect ignition and cause engine shaking. Use a multimeter to measure the resistance and replace the one with significantly higher resistance. 3. Spark plug lifespan: Spark plugs have a limited lifespan. After exceeding 30,000 to 40,000 kilometers, their ignition efficiency significantly decreases, which can affect ignition. This is the most common issue, and replacing all the spark plugs can resolve it.