HAVE WATER IN RESONATOR AND HAVE TO REFILL EVERY...

  • Tiny
  • wolverrine
  • 2003 Pontiac Sunfire
  • 200,100 miles

Have water in resonator and have to refill every two days. What could the cause(s) be?

Friday, March 8th, 2013 AT 3:33 PM

2 Answers

  • Tiny
  • Randico
  • Member

The purpose for the coolant reservoir is for expansion, when at operating temperature the water expands and have some go into the reservoir, When the engine cools coolant /water condenses and draws the fluid back in, in you case you are loosing it, this is mainly due to a leak, means you need a pressure test to find the leak. This can be at a number of places, the waterpump, radiator, heatercore, cooling hoses

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Friday, March 8th, 2013 AT 3:45 PM
  • Tiny
  • Jacobandnickolas
  • Expert
  • 68,315 posts

As he said, get a pressure tester from the local parts store and when the engine is cold, pressure test the system. Once it is pressurized, then you need to look for leaks.

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Friday, March 8th, 2013 AT 6:47 PM

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