Coolant is boiling in the reservoir

Tiny
DAN TIMO
  • MEMBER
  • 2003 SUBARU FORESTER
  • 100,000 MILES
After driving my subaru forester turbo for like 50 minutes I realize that the car is returning water to the coolant container. The container gets full and one can see it boiling, after cooling the water goes back to the normal level. This car does not overheat because the temp gauge does not go above the normal place. I have changed the radiotor cap but still the problem remains. Whats the issue
Sunday, September 25th, 2011 AT 12:48 PM

3 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Is the radiator cap of the correct specs?
Are the cooling fans working correctly?
Do you need to replenish the coolant level?
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Sunday, September 25th, 2011 AT 1:03 PM
Tiny
DAN TIMO
  • MEMBER
  • 4 POSTS
The cap is correct, the fans are working well, I do replenish the coolant but very little
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Sunday, September 25th, 2011 AT 1:07 PM
Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
Check for a stuck thermostat that is most probably not opening fully.
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Sunday, September 25th, 2011 AT 4:24 PM

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