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For more than six months I have been experiencing coolant loss, recently heater stopped blowing hot air

Tiny
ROBERTA BAKER
  • MEMBER
  • 2007 NISSAN PATHFINDER
  • 4.0L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 200,000 MILES
Hi,
For over six months I have been experiencing coolant loss, recently heater stopped blowing hot air.
I have taken the car to various shops. They are unable to locate the leak, some say it is a blown head gasket, others strongly disagree. The car fails the compression test and overheats. A week ago I had a brand new radiator replaced, since Tire Engineers claimed they finally found the leak in the radiator. Unfortunately the leak is there, everything is the same. Please advice.
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Wednesday, October 5th, 2016 AT 8:07 AM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Test for a blown head gasket either chemically or by pressure checking coolant system. No heat is usually no or low coolant is the number one cause.
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Wednesday, October 5th, 2016 AT 9:39 AM
Tiny
ROBERTA BAKER
  • MEMBER
  • 2 POSTS
Thanks so much for your reply. Will check.
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Wednesday, October 5th, 2016 AT 1:36 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Also, air in the cooling system could cause no heat.
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Wednesday, October 5th, 2016 AT 9:44 PM

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