What Could Be the Reason for Suddenly Unable to Accelerate While Driving Normally?

[Reyes]

If a vehicle suddenly cannot accelerate while driving normally, it may be caused by excessive carbon deposits. Due to carbon buildup, localized high temperatures can cause the combustible mixture to ignite prematurely before being sparked by the spark plug, a phenomenon commonly known as detonation. This disrupts the engine's normal operation, resulting not only in vibrations but also in a lack of power when pressing the accelerator, making the drive very jerky. Here are some solutions: 1. Check the fuel tank pump to see if it is functioning properly. The fuel pump motor should make a sound when operating. If the fuel pump cannot supply fuel normally, it will lead to insufficient vehicle power. 2. Inspect the fuel filter to ensure it is working well and check for any fuel leaks or blockages. If the fuel leak is severe, starting the vehicle could potentially ignite it due to static electricity. 3. Examine the intake pipe for any dirt blockages. Remove the air filter to check if it has been exposed to water. Replace the air filter if necessary. 4. Verify if the valve timing is correct and whether the intake and exhaust pipes are tightly sealed. You can clean the throttle body or add a cleaning-type fuel additive (fuel system cleaner) to the fuel, which can help remove carbon deposits to some extent.