What are the effects of water entering the throttle on the engine?

[GabriellaFitz]

Water entering the throttle has severe impacts on the engine. An engine can only compress air, not water. If a large amount of water enters the cylinder, it can lead to bending deformation of the connecting rod in severe cases. Below is relevant information about engines: 1. Introduction: An engine is a machine capable of converting non-mechanical energy into mechanical energy. 2. Classification: Includes internal combustion engines (reciprocating piston engines), external combustion engines (such as Stirling engines, steam engines, etc.), jet engines, electric motors, etc. 3. External combustion engine: An external combustion engine means that the fuel burns outside the engine. 4. Internal combustion engine: An internal combustion engine, or reciprocating piston engine, differs most significantly from external combustion engines in that the fuel burns inside it. There are many types of internal combustion engines, with common gasoline and diesel engines being typical examples.

[OBrooklyn]

As a car enthusiast, I often pay attention to engine issues, and water entering the throttle body is a tricky problem. Once water gets into the cylinders through the throttle body, because water cannot be compressed like air, the engine can instantly suffer from hydrostatic lock. Imagine the piston being blocked by water as it moves upward—the impact force is enough to bend connecting rods or even break the crankshaft. In severe cases, a major overhaul or engine replacement may be required, which is time-consuming and costly. During inspection, check if the air filter is wet, and never attempt to start the engine to avoid worsening the damage. It must be towed to a professional repair shop for handling. This issue usually occurs when driving through shallow water during rain or in flood-prone areas, so avoiding driving through shallow water is the best preventive measure.

[NoahAnn]

I've driven for many years and encountered a similar accident. That time after the rain, there was standing water on the road. I drove straight through it, resulting in water entering the throttle body, causing the engine to suddenly stall and shake. When I stopped to check, the air filter was completely soaked. Later, the mechanic told me that water had been sucked into the cylinders, causing pressure imbalance and leading to piston seizure and deformation. It cost me over 2,000 RMB to repair the connecting rods, and it nearly ruined the entire engine. Fortunately, there was no collision, but the feeling of having to make an emergency stop on the road was quite dangerous. Everyone should try to avoid deep puddles—it's much safer to slow down and drive carefully after rain.

[OwenAnn]

From a cost perspective, repairing a waterlogged throttle body can be quite expensive. A minor issue may only require cleaning the throttle body and replacing the air filter, but if water enters the cylinders and damages the connecting rods, an engine overhaul could cost thousands or even tens of thousands. Insurance might cover some expenses, but the risk of depreciation is high. Long-term driving with such damage can also affect engine lifespan. Regular maintenance should include checking the intake system seals to prevent this issue.

[IsabellaFitz]

Safety is my top concern. Water entering the throttle body can cause sudden engine shutdown, which may lead to rear-end collisions on highways. When wading through water, ensure the depth does not exceed half the height of the wheel hubs, and pass through slowly and steadily. If the engine stalls, do not attempt to restart it; instead, pull over immediately and call for assistance. Regularly cleaning the throttle body during maintenance can prevent blockages and provide peace of mind.

[LaLila]

As someone who frequently repairs cars, I recommend regularly checking the throttle seal and air filter position. If water enters, never attempt to start the engine, as water pressure can bend the connecting rods. After towing to the repair shop, technicians will use professional tools to drain the water and inspect for damage. Before driving through water, ensure your vehicle is in good condition to reduce unexpected risks, saving both money and hassle.