Something Weird I havent crossed before "Clutch Issue"

[getosled]

Ok so i have never crossed this problem on any of the boards... maybe someone has seen or heard about it,

1st While driving for a extended period of time like say 30min or more, when I push in the clutch it seems like there is nothing there, but when I pump it twice it goes right back to normal. So far I have replaced the slave and bled both slave and throw bearing (92 GTZ Quad 4 tranny) so anyone have any ideas? This just recently started happening.

One other issue that has recently been happening is when taking off without really letting the car warm up (10min or so) it starts to drive then when I slow down and step on the gas again it sputters and almost stalls... so i have to feather the gas and tap it so it doesn't stall out, but when it finally goes normally , it doesn't do it again.... I think this piece of troubleshooting is that the car just needs a tune up.

any help with these would be appreciated. thanks

90 GTZ quad 4 with a 92 tranny, scx chip w41 cams, Bilmer Block, and some other goodies on the engine if any of that helps ...

[KFLO 93 GT]

It sounds like the hydraulics are bleeding off pressure. It may be at the master cylinder... do you have to top off the clutch fluid ever or was it low?

The other issue sounds like a vacuum problem. Bust out some shaving cream and hit the lines. If there is a leak it will suck a visible hole into the foam at the leak or blow the foam off at the spot.

[Barry]

Master cylinder. Its probably seaping on the firewall out the shaft seal.

[Cliff8928]

I agree on the master cylinder.... I actually have a spare new one...

[getosled]

When it first happened, I had to add some fluid got it home by pumping the clutch a lot lol. Swapped to my spare master cylinder (clutch) and worked fine for a bit but this one does it too.