* Clogged fuel filter: A clogged fuel filter can restrict the flow of fuel to the engine, causing it to stall or not start at all.
* Faulty fuel pump: A faulty fuel pump can fail to deliver enough fuel to the engine, causing it to stall or not start at all.
* Bad fuel injectors: Bad fuel injectors can fail to deliver the correct amount of fuel to the engine, causing it to stall or not start at all.
Air Intake Issues
* Clogged air filter: A clogged air filter can restrict the flow of air to the engine, causing it to stall or not start at all.
* Bad mass air flow sensor: A bad mass air flow sensor can provide incorrect information to the engine's computer, causing it to run rich or lean, which can lead to stalling or not starting.
Electrical Issues
* Weak battery: A weak battery can provide insufficient power to the starter motor, preventing the engine from starting.
* Bad starter motor: A bad starter motor can fail to engage the flywheel, preventing the engine from starting.
* Faulty ignition switch: A faulty ignition switch can fail to provide power to the starter motor, preventing the engine from starting.
Engine Mechanical Issues
* Low compression: Low compression can prevent the engine from generating enough power to start.
* Worn piston rings: Worn piston rings can allow oil to leak into the combustion chambers, causing the engine to lose compression.
* Bent valves: Bent valves can prevent the engine from sealing properly, causing it to lose compression.
Computer Issues
* Faulty engine computer: A faulty engine computer can fail to provide the correct signals to the engine, causing it to stall or not start at all.
* Bad sensors: Bad sensors can provide incorrect information to the engine computer, causing it to run rich or lean, which can lead to stalling or not starting.
