Some Nissan Titan owners report experiencing issues where the engine won't crank after leaving the ignition switch on, potentially due to a malfunctioning ignition switch that disrupts electrical flow to the starter motor and other critical systems. Additionally, some owners have identified a faulty crankshaft position sensor as a reason for the engine turning over but failing to start, as this sensor is essential for providing timing signals to the fuel and ignition systems. Furthermore, a lack of fuel entering the combustion chamber or ignition issues, such as insufficient spark, can also prevent the engine from starting. To resolve these issues, it is recommended that owners check the ignition switch, inspect the crankshaft position sensor, and ensure proper fuel delivery and ignition system functionality. If problems persist, seeking professional assistance may be necessary for effective diagnosis and resolution.
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