What would cause the engine not to start on a Daewoo Leganza after timing belt broke?

1. Bent valves: One of the most common causes of a no-start condition after timing belt failure is bent valves. When the belt breaks, the pistons can continue to move up and down, but the valves will be stuck in place. This can cause the valves to contact the pistons and bend, which will prevent the engine from starting.

2. Broken camshaft: The timing belt drives the camshaft, which controls the opening and closing of the valves. If the belt breaks, the camshaft can stop rotating, which will prevent the valves from opening and closing and the engine will not be able to start.

3. Damaged crankshaft: The crankshaft is driven by the timing belt, and if the belt breaks, the crankshaft can be damaged. This can prevent the engine from starting or cause it to run very poorly.

4. Engine damage: If the engine has sustained any damage as a result of the timing belt failure, it will not be able to start. This damage can include broken pistons, damaged cylinder walls, or broken connecting rods.

5. Immobilized timing components: If any of the timing components such as the camshaft, crankshaft, or oil pump have been immobilized due to the timing belt failure, they will not be able to perform their necessary functions and the engine will not be able to start.

If any of these conditions are present, it is important to have the engine repaired by a qualified mechanic. Continuing to drive a vehicle with a broken timing belt can cause serious engine damage.