1. Fuel Pressure Regulator: The fuel pressure regulator (FPR) is responsible for maintaining a constant fuel pressure to the engine. If the FPR is faulty, it may not be providing enough fuel pressure to the engine, causing it to not start.
2. Fuel Injectors: The fuel injectors are responsible for delivering fuel to the engine's cylinders. If one or more of the fuel injectors are clogged or faulty, it can prevent the engine from starting.
3. Engine Control Module (ECM): The ECM is the brain of the engine, and it controls various engine functions, including fuel injection and ignition. If the ECM is faulty, it may not be sending the correct signals to the fuel injectors or spark plugs, causing the engine to not start.
4. Throttle Position Sensor (TPS): The TPS is responsible for sending the ECM information about the position of the throttle. If the TPS is faulty, it can send incorrect signals to the ECM, causing the engine to not start.
5. Catalytic Converter: A clogged catalytic converter can cause the engine to not start due to excessive exhaust back pressure.
To diagnose the exact cause of the problem, it's recommended to check fuel pressure, inspect the fuel injectors, test the FPR, and scan the vehicle for trouble codes.
