What Are the Effects of Starting the Car Without Turning It Off First?

1 Answers
KateAnn
07/29/25 3:39pm
Restarting the car while the engine is already running has almost negligible effects on the engine itself, but it can have some impact on the flywheel teeth and the starter motor. However, occasional mistakes in operation will not cause significant damage or lead to component failure. Here are some key points to note when starting a car: 1. First Look: Walk around the car to inspect its exterior and surroundings. Check for any obstacles in front or behind the vehicle, any suspicious oil or water stains on the ground where the car is parked, whether the front and rear light assemblies are damaged, and if the tire pressure is adequate. 2. Second Check: Verify that the engine oil and coolant levels are sufficient, and ensure that the front and rear lights, signal lights, and dashboard are functioning properly. This step mainly involves checking the car's internal technical condition. Lift the hood, pull out the dipstick to check if the oil level is normal, and unscrew the radiator cap to inspect the water level. 3. Starting: If the first two steps are normal, turn the ignition key to start the engine. Each start-up should not exceed ten seconds. It is important to note that when starting a cold engine, the throttle should be pressed gently and gradually. Avoid immediately accelerating sharply after starting, as this can cause the engine speed to rise rapidly. During a cold start, the crankshaft speed increases suddenly, and the oil may not reach the bearing positions in time, potentially causing bearing damage.
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