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No clutch pressure

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nicknorth11

15+ Year Contributor
663
7
Feb 9, 2005
Grand Blanc, Michigan
Hey guys, I know there are TONS of clutch pressure threads on here, but after reading through 10,000 of them, I'm still not sure what my problem is.

I have done an awd swap over the winter and my clutch (ACT 2600) was working perfectly before. I blew my fwd transmission and decided to awd swap instead of replacing it. The build included a new ACT flywheel and I stuck with the same clutch. I also ditched the accumulator for an ss line. After bleeding the system endlessly, I cannot get enough pedal pressure to engage the clutch. My master is relatively new. The slave is old, but worked fine last year. Is there any way I could've installed the clutch wrong? Do you guys have any ideas that I can try to fix this thing?
 
To me it sounds like a master slave problem, have you tryed to adjust the rod that under the dash that goes to the clutch petall?? Step heights may have been diffrent and it was adjust to the other flywheel/ clutch setup..Also have you replaced a clutch fork?? Also , are you using a washer behind the pivit ball??
 
Check master cylinder for leaks (around the brake pedal/clutch pedal)
Check slave cylinder for leaks (by bottom of radiator)

If no leaks, rebleed the system. Air loves to get trapped in the maze of tubing for the slave.

If no luck. Maybe you didnt hook up the pivot arm in the bellhousing?

Also double check that you have a slave cylinder rod in there!
 
Have you tryed to adjust the rod that under the dash that goes to the clutch petall?? Also have you replaced a clutch fork?? Also , are you using a washer behind the pivit ball??
Yes, I have readjusted the rod length. No, I have not replaced the fork, but the tranny was built by shep last year, so it should be ok. And no, there is no washer.
Whats the step on the new flywheel?
No clue.
Check master cylinder for leaks (around the brake pedal/clutch pedal)
Check slave cylinder for leaks (by bottom of radiator)

If no leaks, rebleed the system. Air loves to get trapped in the maze of tubing for the slave.

If no luck. Maybe you didnt hook up the pivot arm in the bellhousing?

Also double check that you have a slave cylinder rod in there!
I haven't been able to find any leaks, and I have bled the thing with 1.5 big bottles of brake fluid. I do have some pressure, so I'm sure the arm and rod are ok.

I'll look into all of the posted ideas. Thanks a lot guys.
 
I put a new master and slave on today and tried to bleed it according to TRE's site/video. I get less pressure now than I did before. Also, no matter how much I turn the adjustment rod, I can't get it to the point where I can't push in the slave rod. Any idea what I've done wrong or why this stuff isn't working?
 
I re-replaced the master cylinder and now I have some pressure, HOWEVER, I can't get the car into gear when the engine is running. Also, I can hear loud bubbling coming from the master cylinder reservoir. Everything seems tight and I don't see any leaks. What is going on?
 
change the slave. if your not building enough pressure in the pedal that is more than likely the issue. now, you can definelty re-attempt to adjust the clutch rod on the pedal. if your master is making strange noise and you cant push you slave in by hand, then adjust it so the pressure can make it back to the master cylinder, and is no longer being blocked by the bleeder valve in the cylinder.

hope this is helpful

EDIT: i just saw where you said you changed the slave. how did you bleed it?? that noise from the master sounds alot like air and back pressure in the line.
 
honestly, im not sure what else to do. could be the T.O.B seeing as it wont go into gear with the car on.
 
Did you use OEM master? I tried using a beck/arnley once before and it lasted maybe 2 weeks with my 2600. I went to bleed it after it was feeling funny and after that I couldn't get pedal pressure. I removed the master and the rod would just flop around. I see yours is new and so was mine, but I'd check it because I had the exact same problems.

Try to crack open the slave to see if it will gravity bleed.
 
No, it's an autozone master. I actually already tried replacing it with another one and its doing the exact same thing. My last one from autozone lasted 9 years and I'm starting to think it didn't need to be replaced in the first place.

I'm going to try to readjust the clutch switch and rod again today and also rebleed it.

The transmission is a used shep stage 4 that is a year old (verified with shep) and is supposed to have less than 500 miles on it and in perfect condition. Is there any way this could cause an issue? I used the linkages and linkage brackets from my car.
 
Yeah, but I was too impatient to let it finish. Why is that better than normal bleeding?

When my mc was bad, it took forever to bleed out. That was the reason I took it out to check it and sure enough the piston was stuck causing it not to release fluid on its on and not get pedal pressure also. Switched it out to OEM and it gravity bled pretty good/fast. Within 5-10mins it probably would have leaked all the fluid out. I'm not saying yours is bad, but mines was new also and didn't last 2 weeks. Just make sure is what Im getting at. Just because its new dosen't means its working.
 
your not bleeding it right thats the only way you wont get clutch pressure with all new parts. go on youtube and look up clutch adjustment, there is a video on there with a lot of views. that should help you see what your doing wrong.
 
I've done it according to the video. In fact, I made a step-by-step instruction sheet from it that's in my garage right now. I've also had two different friends help me. Both are great with cars, one is a mechanic.
 
Well like pauleyman said your step on the flywheel could be off which would make the clutch not contact the flywheel/flex plate. You have an awd trans in, it might be different now since shep built it right?
 
Look at your clutch fork. Where does it sit in that boot? It should be centered But if it's towards the passenger side you need to pull your tranny and shim te pivot ball.
 
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