Will the engine take in water if it doesn't stall when driving through deep water?

[GemmaAnn]

Driving through deep water without the engine stalling means water will not enter the engine. Here are the relevant details: Water intake: Theoretically, as long as water does not submerge the air intake, it will not affect the engine. However, there are too many unpredictable factors, such as waves caused by passing vehicles that could splash into the air intake, or unknown underwater conditions like potholes, which may affect the vehicle's ability to pass through. Engine: The engine is a fully sealed environment, with the only potential entry points for water being the air intake and exhaust. The exhaust will not take in water while operating, so as long as the air intake is above the water level, no water will enter. If water enters the engine, the vehicle will stall. If the vehicle does not stall, it means no water has entered.

[AnnieFitz]

I'm the kind of friend who often researches cars. When a car passes through deep water, even if the engine doesn't stall, water can still get in, and the key factor is the water depth. If the water level rises above the engine's air intake, the engine will suck in water along with air while running—because if the air filter system gets wet, water can be directly drawn into the cylinders, potentially causing the engine to stall instantly or suffer internal damage. The risk is quite high. For example, when the water level exceeds half the height of the wheels, the air intake, often located in a lower position in the engine bay, is prone to being submerged. I remember once checking a friend's car after it had gone through water and finding water stains all over the cylinder head—water had sneaked in. So, don't assume everything's fine just because the engine is running normally. It's important to develop the habit of checking the vehicle's wading depth indicator, and if possible, consider modifying to a raised air intake.

[AutumnFitz]

From my extensive driving experience, not stalling in deep water doesn't guarantee safety, as water intake issues are quite common. When I worked in transportation, I saw several vehicles where the engine was running fine, but water seeped into the intake system, resulting in bent connecting rods. The reason is that when water levels are too high, there's a high probability of water being drawn into the intake, especially in older models where the air filter is positioned low. My advice: always check water depth before crossing—don't exceed the bumper's lower edge; drive slowly at a steady speed to avoid splashing; afterwards, inspect the air filter box and intake pipes for moisture. These small precautions can save you major repair costs.

[DiAriel]

Simply put, the way to avoid water entering the engine is to stay vigilant in deep water areas. If your engine is still running while driving through water, but the water is too deep, exposing the air intake is dangerous. I generally recommend measuring the water level not to exceed half of the wheel height, driving slowly to reduce waves; turning off the air conditioning in advance to reduce engine load; and checking if the air filter box is dry after wading. This can reduce the chance of water ingress.

[MasonDella]

If water actually gets into a car engine, the consequences can be severe. When water is sucked into the cylinders, the pistons can't compress it during movement, which may cause the connecting rods to bend or even break. At best, it requires a major overhaul; at worst, the entire engine needs replacement. A relative of mine learned this the hard way—their car didn't stall while driving through water, but after a few kilometers, it started shaking violently. Upon disassembly, the engine was full of accumulated water and rust. The repair cost thousands, so don't risk driving through deep water just for temporary convenience.

[GrahamRose]

Be cautious of safety risks when driving through water: an engine that hasn't stalled isn't necessarily safe, as water can invade through the intake system. The key is controlling water depth—for example, ensuring the water level doesn't exceed the height of the exhaust pipe; if water reaches the air filter, the engine sucking in water is disastrous. I recommend turning off the AC before entering water to reduce load, passing through slowly without sudden acceleration, and checking the engine compartment afterward for any signs of water leakage. This way, you can protect your beloved car.