Volvo V50 engine cranks but fails to start after replacement on Volvo V50

Some Volvo V50 owners report experiencing issues where the engine cranks but fails to start after a replacement, often due to a dead battery, alternator problems, or a failed starter. Ignition system failures, such as faulty spark plugs, ignition coils, or distributor caps, may also prevent the engine from starting. Additionally, some owners find that starter motor failure is the reason the engine is not turning over properly. In cases where the engine only clicks without cranking, it could indicate a flat battery, and using a jumper pack may provide a temporary solution. To effectively diagnose and address these issues, it is crucial to check for fuel pressure, inspect fuses, and evaluate the condition of the PEM module. Furthermore, purging air from the fuel system after changing the fuel filter may be necessary to achieve proper fuel pressure for starting the engine.