overheating..HG/head? SOLVED
#1
09-24-2007 | 02:26 PM
Thread Starter
Joined: Jun 2006
Posts: 4
Likes: 0
overheating..HG/head? SOLVED
Car: 1997 Neon 2.0L DOHC
Problem: overheating, throws coolant,
Observations:
* Every day I have to fill the coolant system a bit.
* When trying to "purge"the system. The coolant eventually starts to make it's way up through the cap opening and spill out.Goes back down, and then pours out again.I can see air bubbles.
* Overfill tank is....overfilled and when the system is closed, the cap is on. It seems that the coolant makes it's way to the overfill tank-->overfills it and spills. Then I have to add more coolant.
* I'm guessing I have an air leak some where. Expands because of the temperature, which makes the coolant go into the overfill tank and spill. Then when the car is off, the air goes toward the pressure cap. Because the air supposibly eventually collects there.
*No milk shake. meaning no water/oil mixture.
*I did see extremely little line of what seemed to be oil. But not enough. I mean draw a 2 inch line with a pencil and thats the amount I saw what I thought was oil.
Parts changes:
*NEW water pump, was actually about to go bad. it was squeaking and making sounds
*NEW timing belt
*NEW radiator, old rad was actually very bad cracked and leaking
*NEW hoses, no leaks on them
*NEW thermostat
*NEW pressure cap
Question:
Can my headgasket or head bust and not have the engine oil and coolant mix? So that only air can come in? My dad says NO, with great confidence. I hope its my HG gasket or head so i can laugh in his face. jk
just me waiting for halo3
Problem: overheating, throws coolant,
Observations:
* Every day I have to fill the coolant system a bit.
* When trying to "purge"the system. The coolant eventually starts to make it's way up through the cap opening and spill out.Goes back down, and then pours out again.I can see air bubbles.
* Overfill tank is....overfilled and when the system is closed, the cap is on. It seems that the coolant makes it's way to the overfill tank-->overfills it and spills. Then I have to add more coolant.
* I'm guessing I have an air leak some where. Expands because of the temperature, which makes the coolant go into the overfill tank and spill. Then when the car is off, the air goes toward the pressure cap. Because the air supposibly eventually collects there.
*No milk shake. meaning no water/oil mixture.
*I did see extremely little line of what seemed to be oil. But not enough. I mean draw a 2 inch line with a pencil and thats the amount I saw what I thought was oil.
Parts changes:
*NEW water pump, was actually about to go bad. it was squeaking and making sounds
*NEW timing belt
*NEW radiator, old rad was actually very bad cracked and leaking
*NEW hoses, no leaks on them
*NEW thermostat
*NEW pressure cap
Question:
Can my headgasket or head bust and not have the engine oil and coolant mix? So that only air can come in? My dad says NO, with great confidence. I hope its my HG gasket or head so i can laugh in his face. jk
just me waiting for halo3
#2
09-24-2007 | 02:35 PM
Record Breaker
Joined: Aug 2007
Posts: 1,797
Likes: 0
From: roswell New Mexico
RE: overheating..HG/head?
thermostat would be the first thing i change eventhow this would not cause coolant loss.
you could try this stuff http://www.rxauto.com/?gclid=CMa9iKbe3I4CFQYjWAodRUFKAQ
you could try this stuff http://www.rxauto.com/?gclid=CMa9iKbe3I4CFQYjWAodRUFKAQ
#4
09-26-2007 | 02:42 PM
Thread Starter
Joined: Jun 2006
Posts: 4
Likes: 0
RE: overheating..HG/head?
It's the headgasket.
Air is entering through the head. Expanding and adding more air. The air then pushes the coolant out through the overfill tank. So while I'm driving I'm spilling coolant. Causing a flutuation in temperature and eventually overheating. It's not necessary to have an oil and water mixture as a sign of a blown head gasket.
While purging the cooling system I could see small bubbles near the thermostat. Even though, the coolant wouldn't go down. The bubbles meant air was coming in.
Air is entering through the head. Expanding and adding more air. The air then pushes the coolant out through the overfill tank. So while I'm driving I'm spilling coolant. Causing a flutuation in temperature and eventually overheating. It's not necessary to have an oil and water mixture as a sign of a blown head gasket.
While purging the cooling system I could see small bubbles near the thermostat. Even though, the coolant wouldn't go down. The bubbles meant air was coming in.