How to Determine Water Leakage in Nissan Teana's Water Pump?
2 Answers
Nissan Teana's water pump leakage can be determined by the following methods: 1. Excessive axial movement of the water pump rotor, excessive interference between the auxiliary seal and the shaft, preventing the moving ring from moving flexibly on the shaft, leading to water leakage due to the inability to compensate for displacement after wear of the moving and stationary rings; 2. Insufficient lubrication on the sealing surface causing dry friction or scratching the sealing end face, resulting in water pump leakage; 3. Periodic vibration of the rotor. Taking the 2021 Nissan Teana as an example, it is a mid-size car with body dimensions of length 4901mm, width 1850mm, height 1450mm, a wheelbase of 2825mm, a fuel tank capacity of 61.3 liters, and a curb weight of 1456kg.
When I checked the Nissan Teana's water pump for leaks that day, I usually started by observing daily changes. A sudden drop in coolant level is the most obvious sign, especially if the reservoir empties quickly—this strongly suggests a leaking water pump. After parking, squat down and look under the front of the car; if you see red or green liquid dripping on the ground, that’s a clear signal. Additionally, start the engine and listen near the water pump—hissing or buzzing noises indicate bearing wear, which can cause seal failure and leaks. Once the water pump fails, the engine temperature may spike into the red zone, and if the dashboard warning light comes on, stop and inspect immediately. Don’t forget, the plastic housing of the Nissan Teana’s water pump is prone to aging, and the risk increases after 80,000 kilometers. During routine maintenance, open the hood and use a flashlight to check the water pump’s connections—wet stains mean the seal ring is damaged. If left unrepaired, rapid coolant loss can lead to engine overheating and even damage the crankshaft, which is both costly and dangerous. So, if you notice anything unusual, get it checked at a shop right away.
