What to Do When the Starter Motor Clicks but Doesn't Turn?

[ElizabethLynn]

This situation may be caused by a damaged battery or a circuit malfunction. The battery is a crucial component of a car. Without it, the vehicle cannot operate normally. When the engine is not running, the battery supplies power to all electronic devices in the car and is also responsible for starting the engine. Common car faults include: 1. Poor idle operation; symptoms may include unstable idling with engine shaking, idle speed exceeding the upper limit, idle speed falling below the lower limit, or rough idling. These issues may be related to faulty or malfunctioning components such as fuel injectors, oxygen sensors, air flow sensors, exhaust gas recirculation valves, as well as poor connections in control circuits or vacuum lines. 2. Abnormal noises; such as "backfire," "popping," "surging," "knocking," and mechanical noises. "Backfire" occurs when combustion flames spray out from the intake pipe in the opposite direction of intake, accompanied by noise. Possible causes of "backfire" include clogged or stuck main fuel injectors or cold start injectors leading to an overly lean mixture, delayed or misfired ignition, unsealed intake valves, intake manifold leaks, or low or fluctuating fuel pressure.