Yet another clutch bleeding problem. You would think Porsche would have designed a system to be bled. No, they had to combine the reservoirs and introduce a partition so a leaky clutch would not let your brakes run dry. All that aside, I don't have a power bleeder, and I'm not planning on buying one (maybe). But please don't just comment "Buy a power bleeder", because this is a technical discussion.
I cannot for the life of me find the hole that lets brake fluid spill from one side to the other. Is it as small as the sensor cup hole? I've put my fingers in the reservoir and can't feel the tipping point.
I'm bleeding the clutch. I fill the reservoir with fluid (as much as possible). I pump the pedal and crack the master cylinder line, which bleeds air out of the master cylinder threads. When fluid starts flowing out of the threads, I know most of the air is out of the cylinder. Moving to the bottom, I crack the slave cylinder while somebody pumps. I get a little bit of froth and then fluid. I assume I'm done. I have a pedal, which is good. A couple weeks later the pedal feels softer. I noticed that the line between the master cylinder and flexible line creates a high point to trap air during bleeding. Is the fluid viscus enough or the line small enough to push bubbles downward (like bleeding the brakes). Or, is the inner diameter of that flexible line running to the slave cylinder too large allowing bubbles to move up faster than I can pump fluid out of the slave cylinder nipple. If this is the case, the ONLY way to bleed is to increase fluid velocity (i.e. power bleed) or bleed bottom up using a grease gun to increase fluid velocity. This in turn defies gravity by forcing bubbles down as they are stuck in the fluid.
Is anybody else feeling this way? I think reverse bleeding is the way to go, but the master cylinder HAS to be pointing down (back of car raised). Once bubbles make it in there, fluid velocity alone won't push them to the reservoir because the cylinder is larger than the line.
Just a thought. I'd like to drive my car sooner of later
