Water loss in expansion tank and temperature light/alarm

Tiny
MATT COUSINS
  • MEMBER
  • 2006 SKODA FABIA
  • 1.4L
  • 4 CYL
  • 2WD
  • MANUAL
  • 118,000 MILES
Coolant level dropping with no obvious water leek and temperature warning alarm sounding. The heaters are blowing warm as normal, but I have left the car running and the fan does not kick in. Any thoughts please?
Matt
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Sunday, November 20th, 2016 AT 4:33 AM

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Tiny
CARADIODOC
  • EXPERT
When there is no obvious external leak, the best suspect is a leaking cylinder head gasket. Your mechanic can perform a chemical test at the radiator to verify that. The test involves drawing air from the radiator, while the engine is running, through a glass cylinder with two chambers partially-filled with a special dark blue liquid. If combustion gases are present, the liquid will turn bright yellow.
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Sunday, November 20th, 2016 AT 2:34 PM

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