How can you tell if your water pump is working? If you don't hear any noises from the water pump area when the engine is running, the coolant level is sufficient, and the engine temperature is normal, likely the water pump is fine.
Since you cannot physically inspect the impeller and inside of a water pump without removing the pump, the best way to know if it is functioning properly is to visually inspect the coolant condition, test the coolant pH and protection levels, test drive the vehicle to verify normal operating temperature, and squeeze ...
to check your water pump, with the car warmed up, squeeze the upper radiator hose and rev the engine, you should feel the pressure push back on you.
Water pumps are essential for various applications, but they can also experience common problems affecting their performance and reliability. Common problems include overheating, leakage, low water pressure, noisy operation, and cavitation.
Take your radiator cap off and note the coolant level. idle the vehicle until it's hot enough for the fans to kick on, maybe 10-15mins depending. When they do, you can look down in your radiator and see the coolant level drop and probably see it circulating as well.
Burping (so named because of the noise made by the bubbles of coolant exiting the radiator filler neck) is done with the radiator cap removed on cars without a valve. You wait for the car to warm up so the thermostat opens, and then the pressure of the expanding coolant being heated drives the air out.
Answer: Signs include reduced water pressure, unusual noises from the pump, frequent cycling on and off, water discoloration, and visible leaks.
One of the common signs of bad water pump functionality is overheating. The pump may not leak coolant, but the pump mechanism itself may have failed. Over time the fins of the pump can actually wear down to the point where they are no longer moving coolant.
A water pump should last anywhere between 60,000 and 100,000 miles. A water pump replacement costs between $400 and $800 depending on the vehicle and the difficulty involved. Parts can run from $200 to $400, with labor services similarly priced.
Engine Overheating
The most obvious sign that your radiator is damaged is if your car overheats frequently. If the temperature gauge in your vehicle is rising higher than usual or if the engine warning light comes on, these are both indications that your radiator needs to be checked out.
If the water pump is the issue, remove the old radiator cap, and replace it with a new one. Then, get a rag and force it into the upper radiator hose that leads to the engine. After, check if the water pump functions by the coolant rushing out after removing the radiator's blockage.
When the water pump fails, there may be insufficient coolant running through the engine causing it to run too hot and overheat. This can lead to the failure of the engine gasket, cylinder head, and other components. If left unfixed, your engine could get so damaged that it requires an overhaul.
If you notice that your coolant level is dropping quickly or that there is coolant leaking from your vehicle, it could be a sign that the water pump is failing. When the water pump fails, it can cause coolant to leak into the oil, which can lead to engine problems.
Your car's hoses will wear out quickly, especially if you use it for long trips on a daily basis. The hoses could even blow up, allowing coolant to flow freely. Coolant not flowing from reservoir to radiator as a result of a leak could be caused by a faulty radiator.