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I've noticed that the car is using a lot of antifreeze?

Tiny
SAMANTHAP
  • MEMBER
  • 1991 CHEVROLET CAVALIER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 308,000 MILES
Recently I just replaced the thermostat in my car. And now I've noticed that the car is using a lot of antifreeze. In one week it drained the overflow, but yet I do not see a leak. Also when the car is idle it has a bit of smoke coming out from under the hood. I opened the hood and it is coming from the rad. What could this be?
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Friday, December 14th, 2007 AT 2:51 PM

2 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Have the cooling system and pressure cap- pressure tested this will tell if you have internal combustion leakage.
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Friday, December 14th, 2007 AT 3:15 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,812 POSTS
Yep, you probably have a blown head gasket. Here is a guide to help.

https://www.2carpros.com/articles/head-gasket-blown-test

Please go over this guide and get back to us.
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Monday, October 7th, 2024 AT 5:50 PM

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