Residual line pressure?

[Noxx72]

Went to bleed / flush the clutch master the other night and had an odd experience. Opening the bleeder without touchingthe clutch lever resulted in a continuous flow of fluid, to the extent that my master reservoir was draining itself.

I don't know if I have a residual pressure issue that could create a siphon, or if some rebuilding is in order here. Ideas?

 

[Elimax]

Was the clutch MASTER cylinder cover on or off?

Elimax

 

[Thevmaxrider]

If you had the cover off and the bleed nipple open the head pressure caused by the height differential between the m/c and the slave cylinder will cause the constant flow I would think, especially if your m/c is older and a bit worn. Of course I may be wrong:confused2:

 

[tugla]

ive left my bleeder open, cap loose just sitting ontop for about 6 hrs before to help get the air bubbles out, i did have a piece of tubing on it to let it pour into a cup. it didnt drain it, dropped level down a little for sure but nothing major so not sure why yours emptied.

 

[one2dmax]

If you have the OEM lines sounds like it is a line failure (internal casing falling apart creating a "flap" that lets fluid flow one way but then holds pressure instead of letting it flow back the other way).

Sean

 

[Noxx72]

I have Galfer steel lines stem to stern on my '02. I wouldn't have found it that unusual except that I'm pretty sure I remember leaving everything open while bleeding after the stainless line install, and not having the same results.

 

[98Redlne]

If the last time you had your MC open the weather was much cooler, you could have some pressure built up due to the air expanding above the fluid :confused2: