Radiator leaks down at about 23 miles of driving, engine does not overheat.
May 27, 2016 at 9:59 AM
Radiator leak
1994 GMC SONOMA
JOHN DEVANE
- MEMBER
- 3 POSTS
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HMAC300
- ✓ASE Certified Mechanic
- 48,601 POSTS
have this checked for a head gasket failure have it pressure checked first. Then there is a chemical they can add to check further.
May 27, 2016 at 12:06 PM
pressure check has been done.
May 27, 2016 at 1:54 PM
HMAC300
- ✓ASE Certified Mechanic
- 48,601 POSTS
when it is hot check radiator for cold spots if it has those as well as loose/green colored fins on edges and bottom or just cold spots then the rad is bad. I am assuming the thermostat is in good condition and not stuck and no leakage anywhere on engine like hoses or freeze plugs.
May 27, 2016 at 4:24 PM
I have replaced the water pump, heater hose connector ,coolant sensor, thermostat and the water pump adapter housing. I will check for cold spots next.
May 27, 2016 at 6:19 PM
STRAILER
- ✓ASE Certified Mechanic
- 54,832 POSTS
Hey John,
Have you checked the passengers side floor for coolant, sometimes when the heater core let's go it can leak there. Also can you do a chemical check for a blown head gasket?
Here is a guide to help
https://www.2carpros.com/articles/coolantantifreeze-in-the-engine-oil
and
https://youtu.be/5zpNjYmmiYY
Let us know what you find
Have you checked the passengers side floor for coolant, sometimes when the heater core let's go it can leak there. Also can you do a chemical check for a blown head gasket?
Here is a guide to help
https://www.2carpros.com/articles/coolantantifreeze-in-the-engine-oil
and
https://youtu.be/5zpNjYmmiYY
Let us know what you find
May 29, 2016 at 8:17 AM
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