Your 2003 Malibu turns over but will not start you have a new fuel filter pump on it what other reason for car not starting?

If your 2003 Malibu turns over but won't start despite having a new fuel filter and pump, consider checking the ignition system, including the spark plugs and ignition coils, as a failure here can prevent the engine from firing. Additionally, inspect the battery and connections to ensure they are providing adequate power. Finally, verify that there are no issues with the engine's air intake or any potential sensor failures, such as the crankshaft position sensor, which could affect starting.