So, a water pump is a vital part, to all liquid cooled engines.

Because, it ensures the engine coolant, keeps moving through the cooling system.

As the coolant travels through the system, it picks up heat. The flow of the coolant, takes it to the radiator, where heat dissipates into the air.

As a result, the water pump helps the engine, maintain an optimum operating temperature.

So, a vehicle’s pump uses impeller blades, and centrifugal force, to move the engine coolant through the engine. Once that happens, it move on to the radiator. Then, the coolant is cooled, by the movement of air, over the radiator cooling fins. Next, it exits the radiator and flows back into the pump, where the process starts over.

A water pump, can suffer from a few problems

So, a grinding noise from the pump indicates worn bearings. And, it’s easier to  just get a new pump.

A coolant leak from the pump could be a sign that; the shaft seal or the gasket, that sits between the pump and the engine has failed.

If its just the gasket, replace the gasket. However, if its the seal, replace the water pump.

At the same time, check that all of the hoses are intact and not leaking. Some modern pumps, have plastic impellers (fan blades) and these sometimes break. This leads to vibrations, which in turn cause the pump to fail.

Maintaining a healthy water pump is easy:

  • You need to make sure, the engine coolant is in good condition.
  • And, has the correct amount of antifreeze.

So, the latter stops the coolant freezing in cold temperatures and also acts as, a rust inhibitor. As a result, preventing small particles, from breaking off inside the engine and wearing the pump’s parts.


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