What Happens When Starting the Engine with a Flooded Exhaust
2 Answers
Starting the engine with a flooded exhaust depends on the amount of water intake. A small amount may not cause significant issues, while a large amount could lead to secondary stalling and engine damage. Scenario with minimal water intake: If a small amount of water enters the car's exhaust pipe, it will gradually be expelled with the exhaust gases during continued vehicle use, without causing noticeable effects on the vehicle or engine. Scenario with substantial water intake: Excessive water intake can affect the engine, causing it to stall while driving. If the car stalls due to significant water intake, do not attempt to restart the engine immediately. Since the engine's air intake has already taken in water, a secondary ignition attempt can cause severe damage to the engine.
Starting the engine when the exhaust is flooded is a big trouble! The engine will suck in a large amount of water during startup, causing what's known as hydrostatic lock. Simply put, when the pistons move and encounter water resistance, the immense pressure can bend the crankshaft and connecting rods, leading to severe damage to internal mechanical components. In extreme cases, it may even cause cylinder explosion, rendering the entire engine useless. Repairs can cost tens of thousands, not to mention potential safety hazards. I've seen many waterlogged vehicles towed into the shop, all because the owners tried to start the engine. Remember, if your car is in water or the exhaust pipe is submerged, never attempt to start it. Turn off the power immediately and call for professional towing. Be extra cautious about water levels when driving during the rainy season to avoid such predicaments—safety first.
