So, A water pump is a vital part to all liquid cooled engines in operation today. Because, It ensures the coolant keeps moving through the engine block; hoses and radiator, and maintains an optimum operating temperature. Furthermore, a serpentine belt usually drives the pump.

Finally, A vehicle’s water pump uses impeller blades and centrifugal force to move the cooled coolant into the vehicle’s engine. Even more, the water jacket that sits around the engine’s cylinders, which is where the combustion processes take place.

Once the coolant has flowed around the engine, it is taken by hoses to the radiator; usually at the front of the vehicle; where the coolant is cooled, by the movement of air over the radiator cooling fins. It then exits the radiator and flows back into the water 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. These can sometimes be replaced but it’s easier to get a new pump.

Consequently, 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. So, If it’s the shaft seal, the entire pump will need to be replaced. But, if it’s the gasket the pump can be removed, a new gasket fitted and the original pump replaced.

At the same time, check that all of the hoses are intact and not leaking. Some modern water 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.

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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