Checking water pump

Tiny
DISVNVET
  • MEMBER
  • 1994 MAZDA MX3
  • 1.8L
  • 6 CYL
  • 2WD
  • MANUAL
  • 150,000 MILES
After the car runs awhile (does not heat up) sometimes the coolant overflow (overfills). Is there a good way to check if water pump is working correctly.
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Friday, April 26th, 2019 AT 5:29 PM

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Tiny
JACOBANDNICKOLAS
  • EXPERT
Welcome to 2CarPros.

If the engine isn't overheating and the coolant is coming out, we need top check for a bad head gasket. It sounds like compressed air from the combustion chamber is getting into the cooling system and causing this.

Take a look through this link and let me know the results.

https://www.2carpros.com/articles/head-gasket-blown-test

As far as the water pump working, if the engine doesn't overheat, it is working.

Let me know the results of the head gasket test.

Take care,
Joe
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Friday, April 26th, 2019 AT 8:28 PM

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