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2005 Hyundai Santa Fe Unknown source of coolant leak

Tiny
MWEYER
  • MEMBER
  • 2005 HYUNDAI SANTA FE
  • 3.5L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 90,127 MILES
I have replaced the hoses and radiator, but there is still a small coolant leak. I can see a pool of antifreeze on the right side of motor next ro water pump. I feel around hoses while car is sitting and running and don't feel any wetness. It is a small leak but cannot seem to find the source. I changed the oil and it did not have any indication of coolant. Where else can I check?
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Sunday, November 1st, 2015 AT 4:25 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,871 POSTS
The best approach for this type of leak is to add a small bottle of dark purple dye to the coolant, then search a day or two later with a black light. The dye will show up as a bright yellow stain that you can follow to the source of the leak. Auto parts stores will have the dye, and those that rent or borrow tools should have the black light.
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Tuesday, November 3rd, 2015 AT 5:40 PM

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