Why is the car loud when starting?

[StellaMarie]

It is normal for a car to be loud when starting because the engine oil pressure takes time to build up during a cold start, resulting in poorer lubrication and thus louder noise. Here are some relevant details: 1. Cold start: After a cold start, the engine idles at a higher speed to reach the normal operating temperature quickly, which makes the noise seem louder. The noise will gradually decrease and disappear as the idle speed drops. After a cold start, the engine sound is louder, and when the car is parked, the engine oil will automatically flow back to the oil pan. 2. Hot start: If it is a hot start, the engine oil is already in place, providing good lubrication and sealing, so the noise will naturally be smaller. Therefore, it is best to warm up the car for 1-3 minutes in the morning during winter.

[LaNora]

The sound is particularly loud every time I start the engine, and I feel it might be an issue with the starter motor. After prolonged use, the gears inside may wear out or the motor bearings may loosen, causing a roaring sound during startup. Alternatively, if the battery is aging and lacks sufficient voltage, the starter motor has to work harder to turn the engine, naturally increasing the noise. Cold starts in winter can also produce this sound, but if it's loud every time you start, it's best to check if the battery connections are loose or if the electrolyte level is sufficient. Another common cause is damage to the flywheel ring gear, which can lead to unusual noises during startup. I recommend having a technician check the battery condition during regular maintenance and replacing parts early to avoid being stranded due to a failure to start. Safe driving is important, so don’t overlook the small details.

[VonLola]

I often hear loud noises when starting the car, especially on my morning commute. Based on my experience, loud sounds are usually due to insufficient battery power, causing the ignition system to overload and roar. It could also be caused by insufficient oil lubrication, leading to increased friction during ignition. If the belt is loose or worn, it may also produce noise when pulled during ignition. Personally, I would first check if there’s a low battery warning light on the dashboard, then inspect the battery terminals for corrosion. Remember to maintain the vehicle regularly—such as testing the battery life annually or lubricating the starter motor—to avoid breakdowns on the road. Female drivers, in particular, should pay attention to these details to ensure a smooth and safe commute. Safety comes first.

[DeCorey]

A loud noise during car ignition is mainly caused by battery issues or starter motor failure. When the battery ages, its output voltage drops, requiring the starter motor to draw more current to start the engine, resulting in noticeable noise. Worn parts of the starter itself, such as the brushes, can also cause abnormal sounds. If the belt slips or has insufficient tension, the noise during startup becomes even louder. I recommend checking the battery's health and replacing it if necessary, while ensuring all wiring connections are secure. Avoid letting small problems accumulate into major issues.