Under what circumstances will water enter the engine?

[IslaDella]

Water may enter the engine under the following circumstances: 1. Human-induced issues: Pay attention to wading under normal driving conditions. 2. Damaged engine cylinder gasket: This is an extremely dangerous situation. Vehicle owners must conduct regular inspections as coolant may inevitably flow into the lubrication system, which can easily cause complete engine damage. 3. Negligence during usage: Whether refueling or cleaning the engine, always ensure the engine is turned off. The consequences of water entering the engine are as follows: 1. Engine failure: The engine is the most crucial component of a vehicle. When water enters, it becomes difficult to resolve heat dissipation issues, and continuous operation may lead to immediate engine failure. 2. Bacterial growth: Water intrusion not only affects the car but also serves as a breeding ground for bacteria. When water enters the engine, bacteria can multiply, and exposure to sunlight and wind may easily produce unpleasant odors in the vehicle.

[DelBryce]

I've been driving for over a decade and have encountered engine water ingress several times. The most typical incident was during a heavy rain outing when the road water level exceeded the tire centerline. I accelerated to drive through, but water was sucked into the air intake, causing the engine to stall. Later, I learned that engine water ingress often occurs during wading. If the water depth exceeds the height of the exhaust pipe or air filter, water can easily enter due to pressure differences. It's even more dangerous when a car is submerged during flooding as water levels rise. Daily factors like aging engine seal rings can lead to leaks, allowing water to seep in after rain or car washes. Cooling system leaks, such as a cracked radiator, can mix coolant into the engine. Using a high-pressure water gun too aggressively while cleaning the engine can directly damage parts. These situations can all lead to piston seizure and engine failure. It's advisable to avoid waterlogged areas while driving, park on higher ground before heavy rains, and regularly replace seal rings and check drainage holes during maintenance.

[Trent]

From a repair perspective, engine water ingress is primarily caused by several scenarios. First, deep wading where water levels exceed the air filter or exhaust pipe, allowing water to be sucked in. Second, flooding during heavy rain or storms where water seeps into the vehicle body. Third, aging seals in the engine compartment leading to leaks. Fourth, cooling system failures such as a broken water pump or radiator allowing water to enter. Fifth, accidentally directing water flow at sensitive areas during car washing. Water ingress can easily cause severe issues like cylinder corrosion or engine seizure. Preventive measures include driving smoothly and slowly through water no deeper than half the tire height during wading, checking the vehicle's sealing integrity during flood seasons, and replacing aging rubber seals during maintenance to ensure cooling system integrity.

[SanEvan]

I'm an experienced driver, and in my memory, engine water ingress mostly happens in extreme weather. After heavy rain, driving through deep water can lead to water being sucked in and causing the engine to stall; during floods, if the car is submerged, water will definitely get in; it's also common for old seals to leak after rain; and being too forceful during maintenance cleaning can flush water inside. I advise young drivers to avoid puddles, drive slowly through water, and maintain the seals well.