Here's a more detailed explanation of what happens when the cam belt breaks while the engine is running:
* The cam belt is responsible for synchronising the movement of the camshaft and the crankshaft. When the cam belt breaks, this synchronisation is lost, and the camshaft and crankshaft will start to move independently of each other.
* This can cause the valves to open and close at the wrong times, which can lead to the valves colliding with the pistons.
* When the valves collide with the pistons, they can bend or break, and they can also damage the pistons themselves.
* This damage can cause the engine to seize, which means that it will stop running and will not be able to be restarted.
Seizing an engine is a serious problem, and it can be very expensive to repair. It's important to get the car to a mechanic as soon as possible if the cam belt breaks to avoid causing any further damage to the engine.