Losing Half The Clutch Pedal Travel..

[bubba]

Since I picked my car up from the suspension place, my clutch pedal has been dodgy.. randomly loses half the travel.

Normally, the friction point isn't on the floor and there's a decent amount of travel. When it plays up the pedal physically moves closer to the floor and the friction point is practically on the floor (disengages at the furthest point I can push it).

Any ideas? I had it suggested to me that it could be the master cylinder dying..

[Tomei_33]

Dsturbd suggested it could be a hydraulic problem.. but i got a new clutch line recently and fluid levels been the same, no leaks (i got same prob as u )

[mitchy_]

broken clutch pivot point?

mine broke, the grab point was right on the floor, had to double clutch to get into gears smootly

[Tomei_33]

i dont know about bubba but my clutch pivot point seems fine, just checked it

[Tomei_33]

bubba your one sounds like my problem when my clutch line was leaking.. see if u got any clutch fluid left

[bubba]

Fluid is full, no leaks and pivot point is fine (it broke about a month ago and replaced it with one out of a Serena.. appears to be a more heavy duty item).

When the pivot broke I had no clutch at all, pedal went straight to the floor. Had to drive it home by starting it in 2nd and shifting without the clutch. Was lucky I didn't lose the slave cylinder piston somewhere on the drive home!

[Tomei_33]

still doesnt solve our problem bubba! the mystery continues.... lol

[6BANGER]

I got the exact same problem... This is a very short story of what happend to me

I got a 95 R33 gtst and last night I went on the freeway, got a bit excited and while doing a 100km on 5th, I tired changing to 3rd but I missed gears and lost half of the clutch padel's pressure. Pulled over and left the car running, mean while I could smell the clutch burning. while the car was turned on, I couldn't change gears but when I turned if off, the gears are ok.

I waited for about 20mins then was able to change gears with forcing it in and pressing the clutch paddle with a bit of a force. I heard some sort of a grinding noise (from the gearbox) the car moved very heavily then I called in a tow truck and .... The END

What could this possibly be??

has anybody had a similar problem??

[bubba]

No it's not the same problem.

Sounds like you fkd your clutch, my clutch is fine - bites great.. loves grabbing 2nd in a standstill. I just randomly have half a pedal O_o

[kjb_r33]

Clutch pedal boxes crack all the time, when you disengage clutch the crack opens up and you lose travel, but wont see the crack until you push pedal down.

[bubba]

Yeah I've been thinking that. When the motor comes out next weekend I'll swap in the Nismo bracket I've got and see if that sorts it.

[PLYNX]

6BANGER your clutch pedal box is broken. Had exactally the same prob with mine. Just take it out and weld it up.

[bubba]

^^ TBO, I don't think his bracket is broken. A big change from 5th to 3rd and missing gears resulting in massive burning clutch smell and not being able to drive it, suggests to me he roasted the f*&k out of his clutch.. maybe even snapped something in the gearbox O_o

[AD4M]

have you bled both the master AND slave cylinders? when i fitted my 25 box we had a similiar sounding issue, we were only bleeding from the slave but once we did the master it was all good and back to normal.

might be worth another bleed?

[bubba]

You fitted a 25 slave when you put the 25 box in?

I haven't changed anything.. only reason I can think of that air could possibly get in is when I snapped the pivot and the slave cyl nearly came all the way out.. symptoms didn't show for several weeks after that though.

When the engine comes out in the next couple of weeks I'll investigate all possibilities.

Edited November 8, 2007 by bubba

[cosworth1971]

air in line mate,mine is the same ...then when you drive it a bit(pump the pedal )the pedal gets it travel back

bleed those lines

[bubba]

Well TBH it went away after the motor came out and went back in. Did adjust the clutch at the top of pedal to bring the friction point off the floor.

Someone reckons it could have been due to the endfloat the last crank had..

[R.3.2.G.T.R]

hi guys, similar issue with my 32R, few days ago my clutch started to travel to the floor and i had to pump it dozen times to get it into gear.. got progressively worse till last nite i couldnt get it into gear at all..

anyhows i popped the bonnet and checked fluid level, the clutch one (sitting next to brake booster?) was empty so i refilled with brake fluid (is this acceptable, dot4?)..

pumped it few times and bingo, able to change gears smoothly.. i couldnt find any leaks on the firewall but yet to check under the car.. this morning same issue, couldnt get it into gear for ages although fluid level is still full..

nothing has been changed ie, clutch, gearbox etc.. im able to shift gears fine without the car started.. when driving, its all smooth and no noises etc..

wots my next course of action?? bleed the system (will lookup the tut).. how do i check for broken clutch pedal box? is this the same unit in the engine bay?

[bubba]

Umm, ignore the pedal bracket and try figure out WHY you lost all of your clutch fluid. Once you've sussed out the leak, top it up and bleed it properly. The reason you're likely still having problems is A) there is still a leak and B) system needs to be bled after being empty and filled up.

Good luck

[R.3.2.G.T.R]

will check it out 2day.. when looking a leak, should i be checking around in the engine bay near the clutch unit.. still not sure how to identify the clutch pedal box and if its cracks open under pressure..