I havent had much experience with diagnosing clutch problems so maybe you can help me out. when i got my rex 6 months ago the clutch was pretty decent. i havent put that many miles on it but the clutch is slipping really bad. i am guessing that something might be wrong with the hydraulic system because the slipping is not consistant. like it always slips pretty bad but somedays worse than others like one day it might be so bad i dont feel like driving it and the next day it gets a little better. so you clutch experts....what do you think is the most probable thing that could have happened?



edit: on a side note, what happened to rx7club.com? it doesnt seem to be working. then i discovered this site and i noticed alot of the same people are on it.

ROFL! I noticed everyone I know from rx7club.com has 1 post, or so https://www.nopistons.com/forums/pub...IR#>/smile.png

Maybe upgrades or the blue screen of death (i don't think they run m$ though)?



As for your clutch problem... It kinda sounds like maybe one of your cylinders are going bad? They might not be fully releasing or somethin... Not sure though--this has never happened to me https://www.nopistons.com/forums/pub...IR#>/happy.png



FS

factory clutch with what mileage count...

failin clutch need not be consistent..

had one that slipped variably throughout the powerband..

it doesnt make sense that it would be just worn out because when i got the car the clutch was alright and i put less than 1000 miles on it. also, it doesnt slip different tho the powerband, just when i engage it.

You need to replace both the master and slave cylinders, bleed the lines. I have the same problem I just haven't gotten around to fixing it. These parts get old you know?

hmm.....lets see victoria british... master - $40, slave - $20. i hope thats the problem cause if its not after buying those i wont have the money to fix anything else. i hope it slipping it all this time hasnt worn it down too much. thanks for the diagnosis suparslinc

have you pulled the tranny and checked the clutch? heck, i've had one slip once, and the meat on the clutch was good, just smoothed out. so, being a broke 19 year old at that time, i grabed a triangler file and made my own grooves until it was rough. outlasted my engine that time. of course the engine don't last that long when your broke and can't afford oil.





late

It's your master and slave clutch cyl, hands down.



The reason I say "and" is because when one goes, the other is either also bad, or close behind. They aren't the most expensive parts on the car, and they're pretty easy bolt-out, bolt-in parts.



My bet would be that it's not a problem with the clutch disc itself, so don't bother pulling the tranny. This is a relatively common problem in our 20 year old cars! Just make sure to do both of them (with NEW parts like from Victoria British or Mazdatrix) and bleed the lines very well.



Also, if it's slipping right now, keep checking your clutch fluid level. When mine was slipping, the rubber boot on the slave cyl would sometimes release and let clutch fluid out, which let air into the lines and dropped my fluid level. Don't let your fluid level get too low!



Jon

thanks jon. what actually happens when they go out anyway? do the parts just wear so much it leaks is that it?

Like any other pump-like or piston-driven/driving devices, they've got internal parts made of rubber and metal that wear down over time. My master cyl's internals wore down so that when you pushed the clutch, it wouldn't force any fluid through tht lines.. That's no good! Then I replaced the master, gave it a few pumps (as my friend watched the slave to see a reaction) and we noticed that every 3rd or 4th pump, the boot would pull back with pressure and squirt fluid out! So then I changed the slave too!



You *can* rebuild them, but at that price (less than a hundred bucks for both, brand new) it's not worth it to rebuild them. You'll get alot more milage out of the brand new ones, and you won't have to worry about them.



Jon

did the master leak?

Nope, master never leaked. It just.. didn't do ANYTHING by the time I got around to replacing it (the car had been sitting for a while)



But I'm not the only one who'se had both go bad. Most people I've talked to tend to say that if you do one, do both. My master brake Cyl did a similar thing when it went. It would push a *bit* of fluid through the lines, but not all the way to the back of the car, and not enough to make the brakes fully engage properly. It never leaked, it just stopped doing it's job.



Jon

Also, check your fluid color... If it's dark and opaque, chances are one of em is starting to fail... I had a problem once--lost all compression--found out it was because of tons of air in my system.



FS

explain what you mean by SLIPPING? when your driving, or when you engage the clutch? just my experiance ( wich ain't much obviously) i can't see how the slave cylander can have anything to do with the clutch slipping. maybe not releasing right when you take off. but not SLIPPING. unless maybe its spitting dot 3 into your housing. so i'm lost in this convo. what is your clutch doing? SLIPPING, or not engaging right?





late

My clutch master was dodgy when i bought my car, i replaced the master cylinder, bled the system and haven't had a problem yet, so it just shows that if one does not operate properly, it doesn't always mean the other is going out too (slave cylinder).

I don't see how either cylinder can make the clutch slip. The clutch rests fully engaged. If either cylinder is broken/leaking, it might not release all the way, you'll have problems shifting probably, but it won't make it slip. If it is slipping when fully engaged, then you need a new clutch, not the cylinders.

thank you very much. thats what i was saying.





late

yea guys, the clutch just engages really slowly. how ever one time i was going 100+ and i could smell the clutch burning.....but the clutch doesnt slip too bad after it engages so i think i will be fine with just the cylinders until i can afford a new clutch.

If the clutch is engaging "slow", then it is just slipping more than what you're used to as it engages. If that, and it slipping some while engaged, is all that is wrong, then it has nothing to do with either cylinder, you need a new clutch. You can use the slipping one for quite a while longer though, it doesn't need to be replaced, just go easy on it and it should last for a while longer until you get some $ for a new clutch. Another possibility is if you've been messing with the pedal adjustment, then you may have it adjusted so the pedal is so low that it won't let the clutch engage all the way. I doubt it, but if you've been messing with the adjustment at all, then it could happen.



If either cylinder is bad, then something else will happen. You will be leaking clutch fluid and need to fill up every once in a while, or when you keep the pedal depressed for a while, the clutch will start to engage itself. You might have problems shifting because the cylinders can't put out enough pressure to disengege the clutch all the way. Or when the cylinder goes completely bad, you won't be able to disengage the clutch at all.



THE CYLINDERS BEING BAD WILL NOT MAKE THE CLUTCH SLIP.

is there a way to check the cylinders do make sure they arent bad?

If they are bad, you will know, did you actually read what I posted?

yea i agree with you now, i dunno what i was thinking. i think the slipping is minimal after it engages but is very noticable while engaging? could a bad throw out bearing cause this because i have noticed shaking sometimes when i engage it.