What is the reason for engine water shortage without finding any leakage?
2 Answers
The reasons for engine water shortage without finding any leakage are: 1. Cracks in the engine's water passages, causing coolant to enter the cylinders and burn. If the engine burns coolant, white smoke will come out of the exhaust pipe. If white smoke appears during high-temperature seasons, it indicates severe coolant burning; 2. The engine temperature is too high during operation, causing the coolant to evaporate into steam; 3. There is a coolant leak. The solution for engine water shortage without finding any leakage is: It is necessary to promptly visit a 4S shop or repair shop for inspection and maintenance. If cracks in the engine block cause coolant to enter the combustion chamber, a new engine block needs to be replaced.
When the engine is low on coolant but no obvious leaks are found, the most common cause is internal leakage, such as damage to the cylinder block or head gasket, allowing coolant to seep into the engine oil or cylinders, which doesn't show visible water traces but gradually depletes the coolant. Another possibility is a faulty water pump shaft seal, where minor leaks evaporate too quickly to be easily noticed. I often encounter such issues during car repairs—sometimes, an aging radiator cap or excessive system pressure can cause steam leaks, which are invisible but lead to coolant loss. Additionally, localized boiling and evaporation due to corrosion or blockages in the cooling system may also result in coolant depletion. If not addressed promptly, the risk of engine overheating increases significantly. It's best to conduct a professional pressure test as soon as possible to prevent the situation from worsening to the point of requiring major repairs.
