What are the symptoms of a damaged VVT valve?

[HarperAnn]

The symptoms of a damaged VVT valve include: sluggish acceleration, fault code alerts, increased fuel consumption, and in severe cases, failure to start. Here is some relevant information about the VVT valve: 1. The VVT valve is the engine's variable valve timing system. The variable valve timing system adjusts the phase of the engine camshaft through its control and execution system, allowing the timing of valve opening and closing to vary with engine speed. This improves air intake efficiency and increases engine power. 2. The variable valve timing technology in car engines adjusts the intake volume, valve opening and closing timing, and angle based on the engine's operating conditions to achieve the optimal air intake, thereby enhancing combustion efficiency.