ive looked every where for the waterfalls behind the dash info

[7EMPIRE]

someone please give me the link or an explanation for the water fall sound behind the dash. i know everyone will say BHG and im pretty sure that is the case. i want to know what is going on in the engine and why it makes that noise that shit is annoying.
p.s i searched the forum with no luck.:1zhelp:

 

[MarkIII4Me]

Split heater core may also be the culprit; but your feet would be getting wet. Also, if you have a large air pocket in the cooling system, it can produce the same sound. If you purge the system and the air returns. That's a pretty good sign that there's a combustion leak into your cooling system. (BHG). I'm afraid I have one in my Celica right now; but I'm just gun run that bitch into the ground.

 

[RazoE]

simply there's air in the system. Either it wasn't burped completely or as mentioned BHG, etc, can be many different reasons..

 

[Moy]

Burp the system. If the sound is still there, do a block leak test