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-   -   Clutch not Disengaging? (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/clutch-not-disengaging-1017818/)

kagoostin 11-15-12 07:01 PM

Clutch not Disengaging?
 
So when i was done rolling the quarter panels, i tried pushing my car out of my garage because i didn't want my garage to smell like gas but something was stopping it from rolling so i jacked up the rear end up and spun one wheel and the other wheel was going in the opposite direction which was weird because i just put in a s4 na lsd in it. So i turn on the car and try to get both of the wheels spinning and as the clutch started grabbing the rpm started to drop like something was holding it from spinning and than it eventually died. Turned it on again and revved even higher and once the clutch gripped something sounded like something snapped, but both of the wheels began to spin the same direction. As i drove off i noticed i couldn't pull out of 1st gear even when the clutch was fully pressed. I'm really not sure whats going on and was wondering if i could have some guidance of what it could be. When the car is off i can shift to some gears smooth but when i turn it off i cant switch to any. I already bled the master cylinder

Sorry if its too much reading. Thanks in advance!

dwb87 11-16-12 06:00 AM


Originally Posted by kagoostin (Post 11287672)
so i jacked up the rear end up and spun one wheel and the other wheel was going in the opposite direction which was weird because i just put in a s4 na lsd in it.

That is normal. ^


As for your real issue... What does the clutch pedal feel like? So, did you rev the engine REALLY high, drop the clutch, and then that is when you heard something snap??

AGreen 11-16-12 07:21 AM

I've had some cars that are just way too difficult to bleed the clutch hydraulics. My FC is one of them. Most come pretty easily, but my FC for whatever reason takes forever. The best way to bleed it is by reverse bleeding.

Volvo Performance Repairs And Modifications

kagoostin 11-16-12 01:02 PM


Originally Posted by dwb87 (Post 11288148)
That is normal. ^


As for your real issue... What does the clutch pedal feel like? So, did you rev the engine REALLY high, drop the clutch, and then that is when you heard something snap??

Buts an lsd? Shouldnt it spin the same direction? And the clutch pedal seems fine

And I did the reverse bleeded it also

AmT_T 11-16-12 05:17 PM

check the fluid level in your clutch reservoir. fill bleed and try again

AGreen 11-16-12 09:49 PM

It can feel fine, trust me. I've bled the clutch on mine until I was blue in the face and it finally worked. It felt fine the whole time too. It's just that if you get a little bubble in there, you're completely screwed. I ended up tapping the slave cylinder with a small plastic mallet while bleeding to get every bit of air out.

You may be able to pop off the rubber grommet from the transmission bell housing to see if there are chunks sitting in there. You could very easily have a broken clutch.

midnightbluefc 11-17-12 03:23 PM

the two person bleed is what i do but it is very time comsuming, i hate it. reverse bleeding? i think imma have to look at this method up...

AGreen 11-17-12 07:48 PM

The Volvo performance link I posted in post #3 has a video about how to do it.

kagoostin 11-18-12 05:03 AM

Well it seems like theres nothing else to do but pull the tranny. Any last suggestions?

Molotovman 11-18-12 06:08 AM

Broken diaphragm spring on the pressure plate maybe. Pull the trans now, check everything out.

AGreen 11-18-12 10:37 AM


Originally Posted by kagoostin (Post 11289974)
Well it seems like theres nothing else to do but pull the tranny. Any last suggestions?

Don't waste 3 more days on it and pull the transmission already.

kagoostin 11-18-12 07:07 PM

Well its just i dont want to spend money on a tranny jack if i dont need to pull it out. But i think i have to cause i just realised maybe i rolled my rear fenders with the car still in gear, causing stress somewhere in the clutch?

REAmemiya_fan 11-18-12 10:29 PM

Get yourself a buddy and put the car high up on jack stands (we support the rear wheels with semi truck drum brakes and the front a arm with 6ton snap on jacks for good measure) and pull the trans with out arms. It isn't heavy by any means. Just be VERY cautious if the input shaft and pilot bearing on the way out. We can have the trans out in an hour or two depending on how much bullshitting we do.

AGreen 11-19-12 10:28 AM


Originally Posted by kagoostin (Post 11290519)
Well its just i dont want to spend money on a tranny jack if i dont need to pull it out. But i think i have to cause i just realised maybe i rolled my rear fenders with the car still in gear, causing stress somewhere in the clutch?

You definitely don't need a transmission jack. I remove the transmission by myself all the time. I just lift the car up, remove the associated interference, pull the transmission out and on to my chest, then off to the floor.

You cannot damage the clutch by rolling fenders, even if the car's in gear. There's more stress on the drivetrain while cruising than you could put on it by rolling the fenders.

Given your scenario, my bet is still on faulty hydraulics. :nod:

Molotovman 11-19-12 10:40 AM

I'm it AGreen. I pull the N/Atran myself. It's light.

misterstyx69 11-19-12 05:37 PM


Originally Posted by REAmemiya_fan (Post 11290698)
Get yourself a buddy and put the car high up on jack stands (we support the rear wheels with semi truck drum brakes and the front a arm with 6ton snap on jacks for good measure) and pull the trans with out arms. It isn't heavy by any means. Just be VERY cautious if the input shaft and pilot bearing on the way out. We can have the trans out in an hour or two depending on how much bullshitting we do.

without ARMS?..hmm..
how do you hold the ratchet?..lol.

kagoostin 11-20-12 03:34 AM

Pulled out the tranny and the clutch seems fine but the pilot bearing was seized up. Maybe abou 2000-2500 miles on it. I dont recall lubing it or putting a pilot seal on it. Could this be the reason why it seized up and why the clutch isnt releasing all the way?

AGreen 11-20-12 06:24 AM

Usually the pilot bearing is a small needle bearing or a brass bushing. If it's the needle bearing type, you can see the individual rollers. Otherwise, you have a brass bushing, and it's not seized.

Check the fork, see if it's bent, look for any signs of damage around the pivot point, look for signs of excessive wear around the fingers of the pressure plate, check and make sure the pressure plate is still properly torqued down.

Like I said, my bet was still on faulty hydraulics.

kagoostin 11-20-12 12:41 PM

When we took off all the bolts and was ready to pull the tranny off, it seemed stuck and found that the pilot bearing came off with the tranny when it suppose to stay on the eccentric shaft. Also you cant see any of the needles anymore. So what i was thinking when the tranny was on the car is that having the pilot bearing seized up, it basicly bypassed the clutch and was always spinning from eccentric shaft straight to the tranny.
http://i50.tinypic.com/zn0sqv.jpg

Heres some pictures of the clutch fork aswell
http://i46.tinypic.com/262poif.jpg
http://i49.tinypic.com/2v1tatf.jpg
http://i48.tinypic.com/6efdl0.jpg

AGreen 11-20-12 12:58 PM

Oh wow. That is definitely an issue. Get a small 2 or 3 jaw puller and get that thing off! You also need to inspect the eccentric shaft and transmission input shaft for damage. And yes, you should have definitely put in a little grease once the bearing was installed, and seals always help too :) I'd go to your friendly neighborhood Mazda dealer for that, as most clutch kits will not supply the seal.

If they don't have it, Mazdatrix is only a couple hours away from you, and they both pieces for about $12 total.

Clutches 83-92 (225mm non-turbo)

I just hope the eccentric shaft isn't scored or heat-spotted

SpikeDerailed 11-20-12 08:01 PM

I actually managed to get a pilot bearing seal from advanced auto. The parts guy didnt believe me such a thing existed but they could get it.

boosted414 11-20-12 08:06 PM

as a haeads up, when you spin 1 tire forward on an LSD the other tire should also spin forward. but i believe when you spin 1 backward the opposite spins forward. dont quote me on the second part but i know the first is true

kagoostin 11-21-12 05:20 PM

I was also wondering why wouldnt it go into some gears all the way? Is this another issue

FelixIsGod29X 11-21-12 05:35 PM

Ive read plenty of threads about the pilot bearing seal. 50% say the seal is useless and will fall apart in under 5k, 50% say the seal is important. IF its going to just fall apart then i wouldnt use it.

stevensimon 11-21-12 08:29 PM

I've never used a seal and its been fine.


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