Why is my coolant leaking from my car

Tiny
JTMUGS11
  • MEMBER
  • 1999 PONTIAC GRAND AM
  • 140,000 MILES
I just got a new coolant reservoir put it and my coolant is still leaking what could it be?
Tuesday, January 10th, 2012 AT 11:46 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
From where is it leaking at?
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Wednesday, July 29th, 2020 AT 10:13 AM
Tiny
CARADIODOC
  • MECHANIC
  • 33,755 POSTS
Come on; you know we can't see it over a computer. The reservoir is the last thing I would think of if I were psychic. Many auto parts stores will rent or borrow tools. Ask for a cooling system pressure tester kit. Use that to pressurize the system, then watch where coolant is flowing from.

If the leak is very slow, you can add a small bottle of dye in the reservoir. After driving long enough for leakage to occur, you search with a black light. The dye will show up as a bright yellow stain that you can follow back to the source.
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Wednesday, July 29th, 2020 AT 10:13 AM

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