CLUTCH? problem. i need HELP
 

I'm having some problems with the fc i just bought. I took it to a mechanic for a checkup and he said i may need a new master clutch cylinder. My friend noticed that the clutch pedal felt a bit soft and he recommended i tighten my clutch plate. The car already had problems grinding (sometimes) when i put it into gears (especially high rpms and while racing around and reverse gear). I took it to another mechanic to change the tires and do their full check up and he didn't notice anything wrong. The next couple days later my clutch or something started messing up bad and when i put it into gear, the car bounces around, like when you let off the clutch too fast. It also hardly accelerates, regardless of wot. Tonight it felt somewhat normal again. The clutch pedal feels soft (but it's my first manual car, I've only borrowed my friends honda's and occasional other cars in the past), and the whole pedal does nothing except for the last like inch or two before it's fully released and it's hard to have the car throttled enough because it's hard to tell where the action of the clutch is since it only has like an inch or two of action at the very end before you release it. I told the guy I bought the car from over the phone this story and he thinks I need a slave clutch cylinder!! Everyone says something different and I don't know what part(s) to replace!

It would be very, very helpful if someone could offer any advice on what needs to be done? I would like to put on a nice clutch (possibly a top of the line racing clutch) as my car is fairly modded.. what would a good clutch be and what else could the problem be??

THANK YOU VERY MUCH!
-Erik

replace both the slave clutch cylinder and master clutch cylinder itll help alot...plus check the oil in the tranny as well could be low

yes replace slave and or master...they are cheap really have done it to 2 of my rexex...slave was like 29$ master a bit more...easy job and fixed same descript prob immediately fairly easy to do , bleeding was toughest but ...not really...

no it was plain and simple...lol..wo mine in total cost a bit more...$36 for slave and $70 for the master

if you dont like the freeplay your car has you can adjust it with the rod behind the clutch pedal.
but like the two said in front of me might was well replace the mc and sc.
and also if you are goign to replace the clutch disk,which you have to take your tranny out to do, you would need to replace the pilot bearing and throw out bearing.

be careful with the high rpm grinding that might be your gear syncronizers going bad

wtf are you talking about. he has said nothing about grinding gears in high rpms.

are you just trying to get your post count up?

Are you blind? :uhh:

^^ I suggest you read the OP post again.

Change the clutch fluid
Change the tranny fluid
Inspect or replace the shifter bushings. These bushings are common to go out and cause grinding. I had a customer recently want to trade in their rx7. They were told they needed a new tranny cause it wouldn't go into 5th and reverse. I told them to put in new bushings. WHOLA went in to reverse no problem. It's a cheap fix to. Mazdatrix has a great write-up with pics. REALLY EASY TO DO!!!
Welcome to the club:)

ha i guess i am blind. but still that guy was posting in every thread saying the same shit other people said.

Ok I am backing what others say because i am not an a** thats going to say something other than the truth and having others back a good decision is usually helpful, at least to most people.

Thanks a lot for help... The problem became worse after posting this thread. I had to shove it into first. I put in a new slave clutch cylinder and that became a bit better. When I took the old one off it was loose as hell. So I'm going to change the master and try the bearings cause it grinds in 3rd and reverse and 1st now too. I also tightened the clutch pedal and that helped a lot. My car is becoming slower and slower!!!!!! How come?? It's like it's half as fast and everything was great a couple weeks ago. I have intake, exhaust, piping, headers, new valves, plugs, cables, and some other stuff. It was all solid but now my car is way slower. What gives?

:icon_tup:

You did bleed the clutch, right? You do have fluid in the cylinder right?

If the master cylinder is leaking, time to get a new one. I would never trust rebuilds since the old cylinder is probably too f'ed up anyway.

If you do get a new master, make sure you get either OEM Mazda, or Tokico (They make the OEM Mazda cylinders.) Do not go with a parts store discount cylinder, those are usually all rebuilt, and will have problems MUCH MUCH sooner than the OEM. Mazdatrix sells the Tokico cylinder in their clutch hydraulics section. (www.mazdatrix.com)

If it was a problem with the slave, your fluid would still be pushing through, but the slave wouldn't do anything (i.e. make the throwout bearing disengage the clutch). You would have a hard time shifting; you'd have to float the gears (shift without the clutch). Actually, those are the same symptoms as a pilot bearing seizing on the input shaft.

Your symptoms definitely sound like a leaking master cylinder or a cylinder that's on the verge of failing. Make sure the clutch is properly bled and that the fluid is at a sufficient level. You should have barely any pedal play. If you still do have play, you probably should order that new cylinder, as well as a new clutch hose. (might as well) For the hose, a lot of people get the SS braided line. (myself included) However, after reading about it more, you find out that, because the SS line has less expansion than the stock OEM line, you punish your hydraulics more. I think the best line to get is just the stock OEM replacement.

When you said the car feels slower and slower does it seem like your rpm's are going up and you are hardly accelerating then there is a possibility that your clutch is slipping causing the car to accelerate slower(I have the same issue on my 300zx) so you would need a new clutch. What is your cars mileage, what mods have you done and how much boost are you running. If your making enough power the engine is more powerful than the clutch can hold causing it to spin slower than the engine (hence the word slipping). The only way to fix this is to buy a stronger clutch.

valves?

what valves?

when the clutch is depressed (IE when you are going in gear and all) is the car revving but not going faster? or is it just like the car has no power?

clutch could be slipping and thats not good

whoa i read this entire post and when i posted, there was a post almost identical to mine

haha

sorry about that

clutch depressed usually means clutch disengaged from the tranny.......

my bad haha

i coulda swore that depressed was the opposite of pressed

no prob,

FWIW, you know those sticks that look like popsicle sticks, that the doctor uses to hold down your tongue? Those are called tongue depressers.

i always call them "keep that thing away from my mouth" haha

its cool dont worry about it it just backs what I said

yeah backing up always helps

Fire your friend...

I had this problem and I did have to shift without the clutch and slam the shifter into gear. when i replaced the slave everything was fine again. do i need to rebuild my tranny or is my pilot bearing seized? every shop i take it to, will not let me order parts and put them on (so they can make more $$). these three shops located in the same u-shaped parking lot all worked to together to "test" my car and do basically nothing and tell me that "they could never make me happy", etc.. basically they made me BEG them to work on my car and then he told me i need to rebuild my tranny. then the tranny shop there wouldn't even rebuild mine. he tried to send me to this guy to just by a rebuilt one. anyway, they got me good till later that night. i'm first going to do the bushings and other stuff and hope that works.

i bled the clutch line already. and a mechanic adjusted the pedal for me again because i had it too far away. he made it perfect. i'm ordering a new master cylinder, i already replaced the slave, a hose line, upper and lower bushings for the shifter, gonna check the tranny fluid, the clutch fluid, and replace the pilot bearing is i can and must. As far as why my car is slow, i have no idea. my clutch is fine. when the car accelerates slowly it is normal except that it just accelerates slower when i punch it. it feels like the car has less power. what could that be???? is it the air filter clogged up or something lame like that? so far i'm just working on the shifter but that car is slower than it should be.

i'm going to order a new clutch because it makes more sense to me now what someone said about why i'm losing power. i'm going to post a new thread and ask what a good street or racing clutch would be and where i can order it and what else i need with it... i am clueless but i want to put in a nice performance racing clutch that is okay as an every-day car.

vaccum leak????????
 

ahh... i was browsing another thread and someone was talking about there streetport. mine is streetported too.

That's nowhere near enough vacuum. A stock to street port engine should idle cleanly well under 1000 RPM and pull between 15-18" of vacuum.

Are you SURE you don't have a vacuum leak? How do you know?

Do you get any smoke from the tailpipe?

is that why i am getting slower performance? i have occasional smoke come out the back when i rev it hard and shift gears, etc.. it got way better when i changed the oil from some heavy crap the owner told me to use like 10w-50 to 10w-30. anyway, what do you think?

On the grinding concern, your pilot bearing might have shattered or seazed. This is notorious with these cars. I had this problem a few months back. My tranny would intermittently (spell) grind, sometimes even not engaged. I just bought the OEM replacement (EXEDY) from mazda and it is awesome for daily, cheap as well. The part number for the kit is N308-16-490MV for N/A, N307- for turboII. If you go to your local dealer It will cost you $167, but I work at Classic Mazda here in Orlando and I could get you the kit for around $133 + shipping.

https://www.rx7club.com/showpost.php...7&postcount=56

https://www.rx7club.com/showthread.p...=pilot+bearing

However, if you replaced your slave and everything worked, it's most likely your slave failed. You probably trashed the synchros if you powershifted every gear, even if you rev-matched properly. I forsee a tranny rebuild in your near future.

I believe the transmission does not need replacing yet. What is the mileage on the car and are they original. Has the engine rebuilt, has the clutch ever been replaced. I believe yor problem is more of a bad pressure plate that is flexing and slipping. By flexing i mean that when you push the clutch in and the clutch disengages the pressure plate has points that are stuck to the flywheel causing the gear to keep on spinning too fast for the syncronizer. I have the same problem on my 300zx and all it was was a bad clutch so I would try that first because tranny rebuilds are alot of money.

When I replaced the slave it fixed quite a few problems. I still have enough problems left to warrant replacing other things. I would like to order the pilot bearing, but how would I ensure I get the part? How would you accept payment? Thank you for offering to save me money. What do you think guys, should I try and replace the pilot bearing??

For sure, that sounds like it is my problem. I'm ordering a new clutch tonight. When all my problems were at the worst point a week ago, for a whole day my clutch was not disengaging right and i couldn't accelerate and the car was jerking around everywhere like when you let off the clutch too fast. Ever since that day, that car has been slower.

Could Not Pm
 

I couldn't pm you about your offer, but i would like to order it safely.