Quote:
Originally Posted by Renntag
No air will enter via the bleeder. Fluid flows OUT the bleeder simply by gravity. Best of luck.
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Try pouring water out of a glass... it will flow by gravity... guess what will replace it ? AIR !!!
If your threads on the bleeder nipple are not air tight... air will enter the system... this is not even a serious question as to the physics.... see the other threads concerning this...
Some might accidentally be air tight... but sometimes people quit without all the air bubbles out of their system and do not realize it...
When the pressure required to suck the fluid out of the bottle exceeds the pressure required to pull air by the bleeder threads air will enter the system.