* Spark plug problems. If the spark plugs are not working properly, the engine will not be able to ignite the fuel and produce power. This can be caused by a variety of problems, such as spark plugs that are worn out, spark plugs that are not gapped correctly, or spark plug wires that are damaged.
* Ignition coil problems. The ignition coil provides the electrical current that is needed to fire the spark plugs. If the ignition coil is not working properly, the engine will not be able to produce power. This can be caused by a variety of problems, such as an ignition coil that is worn out, an ignition coil that is not getting enough power, or an ignition coil that is damaged.
* Timing belt or chain problems. The timing belt or chain synchronizes the movement of the pistons and valves in the engine. If the timing belt or chain is not working properly, the engine will not be able to produce power. This can be caused by a variety of problems, such as a timing belt or chain that is worn out, a timing belt or chain that has jumped a tooth, or a timing belt or chain that is broken.
* Engine problems. If the engine itself is not working properly, it will not be able to produce power. This can be caused by a variety of problems, such as worn out piston rings, damaged valves, or a blown head gasket.
