March 16, 2025, 04:33:18 PM

Author Topic: Clutch is good then bad then good again then WORSE  (Read 5974 times)

Offline digitalsolo

Re: Clutch is good then bad then good again then WORSE
« Reply #15 on: May 20, 2013, 09:39:04 PM »
I still use my "suck the air out of the master" method.   I've done...  15-20 bleeds, all in less than 15 minutes a bleed, never had an issue with it.

I like the .750 master cylinders for linear clutch actuation.
Blake MF'ing McBride
1988 Mazda RX7 - Turbo LS1/T56/ProEFI/8.8/Not Slow...   sold.
1965 Mustang Coupe - TT Coyote, TR6060, modern brakes/suspension...
2007 Aston Martin V8 Vantage - Gen V LT4/TR6060, upper/lower pullies, headers, tune.
2021 Tesla Model 3 Performance - Stock...ish.

Offline cool

Re: Clutch is good then bad then good again then WORSE
« Reply #16 on: May 20, 2013, 10:13:18 PM »
I'm with Blake. Vacuum on the master cylinder works.

Offline 383mazda

Re: Clutch is good then bad then good again then WORSE
« Reply #17 on: May 20, 2013, 10:26:29 PM »
Explain this sucking method...  I've got the same issue on my 97 miata right now.  Had a leaking SC so I replaced and bled it and now pedal is worse.  Had wife push pedal as i worked bleeder valve.  That didn't quite fix it, so I held clutch pedal open with a bar, opened bleeder valve and let the fluid reservoir drain from max to min and refilled it 4 times before closing valve and releasing clutch pedal.  Still will not shift into gear, have to shut car off and start it in first.  Hardly any '

I just noticed right before I quit though, the fluid reservoir cap on the MC has a torn gasket...  I wonder if air is leaking out when I push the pedal?
'86 GXL
For now: 383ci, Q-jet carb, vortec heads, 2004r tranny, NA rear = 305 wrhp
Sitting in my garage: LQ4, LS6 intake, Ported LS1 TB, TII rear end
On the wish list still: TC76, engine lift and warm weather!

Offline MeFryRice

Re: Clutch is good then bad then good again then WORSE
« Reply #18 on: May 21, 2013, 01:36:02 PM »
I still use my "suck the air out of the master" method.   I've done...  15-20 bleeds, all in less than 15 minutes a bleed, never had an issue with it.

This is how I bleed the clutch system in mine.

Offline cool

Re: Clutch is good then bad then good again then WORSE
« Reply #19 on: May 21, 2013, 02:24:32 PM »
Explain this sucking method... 

I just noticed right before I quit though, the fluid reservoir cap on the MC has a torn gasket...  I wonder if air is leaking out when I push the pedal?

Definitely fix the gasket on the cap, but as long as you have fluid in the system it cant pull air through the cap.  The vacuum method means that you apply vacuum to the master cylinder resivior while keeping the bleeder closed.  The vacuum will suck all of the air out through the top of the system - which is where it wants to go anyway. You stroke the clutch pedal a few times while you have a vacuum on the system.  Once you quit seeing air bubbles coming up, release the vacuum and see how the pedal feels.

Offline fearnopiston

Re: Clutch is good then bad then good again then WORSE
« Reply #20 on: May 21, 2013, 03:00:44 PM »
I pump the pedal like 40 times, no bleeding has worked every time. If it doesn't at first I adjust the throw on the master.

Offline Badnews87@gmail.com

Re: Clutch is good then bad then good again then WORSE
« Reply #21 on: June 06, 2013, 07:47:05 AM »
fixed had to replace the brand new MC and Slave sucks but at least I had warranty on the previous transmission work... Just sucks that I had to re buy a new slave , MC thanks for help.
If you dont know which way you  are going... any road will get you there!