slipping trans? not clutch?
05-18-2015, 08:02 PM
#21
The line has/had nothing to do with your issue unless it was leaking. The only reason your OEM line is at the floor is because you still have air in the slave cylinder. Unbolt and follow Billmans method for bleeding the slave. Also ensure your pedal free-play is where it should be.
05-18-2015, 08:52 PM
#23
When its slipping, crack the bleed nipple on the slave and let a tiny amount of fluid out. If it stops slipping the port back to the reservoir on the master cylinder is blocked, Normally caused by a slightly pressed pushrod at the pedal end.
05-19-2015, 07:35 AM
#24
How would I clean that port out ? The stainless line is back on, the system is bled and running, it feels perfect for the first couple presses then the slip returns. Brought it back, bled the system a little as recommended, fixed the issue for a few miles, then the issue is back again.... Seems like a master cylinder thing. As far as from when I started swapping lines, I've got a little more dead space than before (maybe another 1/4") but I'm trying to trace it down to where that one or two bubbles could be hiding.
05-19-2015, 08:39 AM
#25
I'm still thinking your pedal free play is to blame, because you say it feels fine at first and then it starts slipping again. That is the only other thing that can really be causing it. With 1 finger on your pedal, how much PEDAL travel do you have while wiggling the pedal in and out? My guess is as chris_barry stated, that the rod is obstructing fluid flow due to it being too tight.
05-21-2015, 07:07 PM
#26
If you adjust the pedal pushrod so its preloading the piston a tiny amount the piston movement will block off the vent port. The vent port is only open when the piston is in its rest position. As soon as the piston is pressed a tiny bit it crosses over the port and blocks it off.
Get under the car and see if you can push the clutch lever back into the slave cylinder. If its locked solid and fluid will not return to the master then this is your problem.
When the fluid cannot return to the reservior, any expansion in the fluid due to heat pushes on the clutch enough for it to slip.
I've also seen instances where dried crud between the piston and retaining circlip also causes this issue.
Get under the car and see if you can push the clutch lever back into the slave cylinder. If its locked solid and fluid will not return to the master then this is your problem.
When the fluid cannot return to the reservior, any expansion in the fluid due to heat pushes on the clutch enough for it to slip.
I've also seen instances where dried crud between the piston and retaining circlip also causes this issue.
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