What are the consequences of a sedan stalling in water?
2 Answers
If a sedan stalls after wading through water, do not attempt to restart the vehicle, as this can cause severe wear to engine components such as pistons and cylinder blocks, and may even lead to engine failure. Below are relevant details: 1. Wading Depth: The standard wading depth for vehicles is generally considered to be half the height of the wheels. This guideline, proposed by experienced drivers or certain experts, serves as a reference for safe wading depth, but actual conditions should always be taken into account. 2. Vehicle Exhaust System Composition: A vehicle's exhaust system typically consists of the exhaust manifold, exhaust pipe, flexible connector, catalytic converter, and muffler. The exhaust system is usually arranged horizontally along the chassis, with the exhaust manifold connected to the engine and positioned higher vertically compared to other components of the exhaust system. The most critical concern regarding water ingress is the engine. While it is unlikely for water to enter the engine directly through the exhaust system, it is more important to check whether the engine's air intake at the front of the vehicle has taken in water.
Stalling in water is really dangerous, I've experienced it firsthand—the car suddenly couldn't move. The water flow rocked the car body, flooded the exhaust pipe, and caused an imbalance in the engine's internal pressure. Worst case, the piston rod could bend or break. If you're trapped inside and the water level rises, you might not be able to open the door and would have to break the window to escape—it's terrifying. I've also heard of accidents where people were swept away by the water. Not only is the engine ruined, but repairs afterward are a hassle—you have to completely disassemble it to check for cracks in the cylinder block. Stalling in water isn't just about money; it's a safety issue. You need to call for a rescue tow truck immediately.
