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No clutch pressure at all ? Whats going on here?

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Old 01-21-07, 12:53 AM
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No clutch pressure at all ? Whats going on here?

Well just recently i've been noticing a reduction in clutch pressure .. and tonight I jump in my car and my clutch was on the floor and still strugling to engage ???

It was running fine up until now (its been a month since I had it installed). It's a 4 puck act clutch.

So what do I need to check ?

My first inclination is that there is air in the lines?
What do I check if this is the case ... also if its not this what are other possible situations that might have caused this?

Another side problem: I have a whirling sound when I go to put the car in gear and it stops when the clutch is let off and the car is in gear.
Old 01-21-07, 01:39 AM
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Sounds like weak hydraulics. They may not be fully bled, or you may have sprung a leak. More common, the master cylinder (and/or slave) could be failing and losing pressure. Given the fairly cheap cost of replacements, it's a good idea to go with new ones on a car you intend to keep for a long time.

Light whining/whirring in neutral is common to the rx7 manual trannies, turbo or nonturbo. The more mileage/wear, the more noise. You may check the fluid level on the trans, or maybe change to a synthetic fluid, but other than that there isn't much of anything you can do. Many people mistakenly diagnose this as a bad throwout bearing or pilot bearing, however this is incorrect since those parts are at rest while the pedal is out. The noise is internal to the trans, a result of mildly worn gears or the input shaft bearing. It is nothing to really worry about.
Old 01-21-07, 02:21 AM
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im going to bleed the lines tomorrow and see whats going on. if that doesnt work then i guess the master cylinder is going to be replaced after.

btw kevin .. how much of a pita is it to replace the master ?
Old 01-21-07, 02:54 AM
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hey, i just replaced the master AND slave, its really REALLY easy to do. just one little line, 4 12mm bolts, 1 10mm bolt on the firewall, and thats it! if you have the parts it might be a 2 hour job. hope that helps, oh, and i hope you are a small guy, us big guys dont tend to fit under dash's too well!

peace
Old 01-21-07, 03:49 AM
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im not gynormous lol

well like i said ill bleed the lines first and then if that doesnt help then ill replace all the other crap... i just dont understand why it has no pressure at once (the clutch itself still rebounds to normal position once i let off of it ... but no pressure on the way down at all).
Old 01-21-07, 05:56 AM
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sounds to me like u have bad hydrolics.. I would suggest replacing both the clutch master and slave only because it seems by the time u replace one the other is weak as it is and u get better pressure form the one replacement that the other goes out shortly afterwards..
Old 01-22-07, 08:39 AM
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you could also have a leak somewhere, this happened to me. I was just really low on fluid in my master cylinder. I filled ot back up and instantly everything was better.
Old 01-22-07, 08:57 AM
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before you bleed anything,lift up the carpet on the drivers side,behind the pedals.Is it wet under there? the master's seal is on the inside of the firewall and they commonly leak fluid down under the carpet,if you just keep adding fluid and this is happening,then you will just keep pumping fluid into your carpet

also if you need to replace the master you should replace the slave too as the sleeving will be shot,i just saw a complete set on e-bay for $60 so your in luck.When i did mine not long ago i also replaced the cracked rubber line with a nice stainless braid one,a worthy $30 upgrade also available on e-bay
Old 01-22-07, 10:43 AM
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where do i fill it up at ? excuse my idiosity .. but i never really filled up hydro fluoid before
Old 01-22-07, 04:50 PM
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sounds like you have a bad seal in the system

mine did the same thing once i put a uprated clutch in

i did a write up about changing the seals - not a bad job

http://www.mazdarotaryclub.com/forum...d.php?p=260366

have a read and see what you think

Stu / Grinder
Old 01-22-07, 05:08 PM
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just replace the hydros, bleed it with a friend, and youll be fine!

peace
Old 01-22-07, 07:26 PM
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i had that same problem. if you have to drive it with the shitty clutch, **** at around 5k In my case it was easier for it to get out of gear, and push the clutch in fast and let it go fast. if it goes to the floor pop it out with your foot.

go to an autoparts store get a clutch master cylinder and a clutch slave cylinder. replace both. bleed lines with a friend. its not hard at all.

someone stated it above i just skimmed through posts.
Old 01-23-07, 12:20 AM
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the master cylinder, open your hood, look on the drivers side up by the firewall, its a round container that stands up. Make sure to use DOT 3 fluid
Old 01-23-07, 12:47 AM
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Originally Posted by nathan214
you could also have a leak somewhere, this happened to me. I was just really low on fluid in my master cylinder. I filled ot back up and instantly everything was better.
..INSTANTLY it was Better,Huh?..For How long??..Until you have to Fill it up again?..and again?...I don't get it!..If your brakes Squeal,You replace the Brakes,If the Fan belt breaks,you replace theFan Belt..Clearly the Man has Hydraulic issues,which means PART replacement...if you Half-*** Fix the car,It will never Fix the problem.It will Still be there.And Further down the line it will Start to Create More..To the Thread starter,Replace the master and Slave.Also you can get an Upgrade to a Steel braided Clutch Hose Too.It will make your Clutch pedal feel ALOT better...DOT 3 Fluid is just fine.Good luck to you.
Old 01-23-07, 03:57 PM
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well yeah no **** lol i was just sayin considering he couldnt get into gear at the moment and if he needed to drive the car still he would have a solution until those parts came in. No need to get all aggressive
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