What are the symptoms of a faulty expansion tank cap?
1 Answers
After the expansion tank cap fails, coolant will spray out from the radiator cap. When the tank cap is damaged, the flow of coolant into the engine decreases, leading to reduced coolant pressure. The heat generated during engine operation cannot be dissipated effectively, causing the engine to overheat. In severe cases, boiling over may occur. Below are additional details: 1. Most automotive engine cooling systems use an automatic compensation closed-type radiator, primarily featuring an added reservoir. The reservoir cap is equipped with a steam valve and an air valve. The advantage of this design is that it reduces coolant loss in the cooling system while also enhancing the radiator's heat dissipation performance. 2. When the pressure in the cooling system exceeds the steam valve's set pressure, the steam valve opens, initiating the radiator's operation. This helps lower the temperature around the engine, ensuring it operates within normal temperature ranges. 3. Coolant is a crucial component of the automotive cooling system. When the engine is running, the coolant continuously circulates within the cooling passages. If the internal pressure becomes too high, coolant may leak out, potentially causing pipe bursts. 4. The coolant reservoir has maximum and minimum level marks. When adding coolant, it is essential to ensure the level remains between these two marks.
