Very soft clutch pedal.

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
Chingon
Posts: 2802
Joined: Sun Jul 06, 2003 8:45 am
Car: 1991 and 1992 hatchbacks

Post

Ever since I got my car the clutch has been VERY soft. Master cylinder and slave cylinder have replaced a while back and the system was bled as well but this didn't fix it. Just last week we replaced the clutch on the car and the pedal is still very soft to push. It engages fine and the pedal position is just fine. The only problem is that it is extremely soft and offer almost no resistance.What could it be?


TurboKA37
Posts: 2602
Joined: Sat Jun 14, 2003 10:55 am
Contact:

Post

strong leg muscles. happens to me too

elbles
Posts: 627
Joined: Thu Nov 21, 2002 10:15 am
Car: 1990 Nissan 240SX SE Fastback
Contact:

Post

Yeah, I doubt you have anything to worry about. I've driven quite a few manual 240's, as well as lots of other manual cars, and the 240's have always had the softest clutch pedal, for better or worse.

User avatar
Mr1der
Posts: 36020
Joined: Tue Sep 02, 2003 8:35 am
Car: It's still not a Nissan...
Location: Lebanon TN

Post

heh, they all feel soft when I drive the T Bird everyday.

get a heavier clutch if you want a stroger pedal feel:D

Chingon
Posts: 2802
Joined: Sun Jul 06, 2003 8:45 am
Car: 1991 and 1992 hatchbacks

Post

my brother's 240's clutch pedal feels A LOT harder and I am pretty sure his clutch is OEM

Chingon
Posts: 2802
Joined: Sun Jul 06, 2003 8:45 am
Car: 1991 and 1992 hatchbacks

Post

will air in the system have anything to do with it?

[Zero-S]
Posts: 5295
Joined: Wed Apr 16, 2003 10:56 am
Car: Tell me whats wrong with this picture. 3 240's, only one runs.

Post

Get a stronger spring?

teriyakibroccoli
Posts: 191
Joined: Wed May 21, 2003 5:41 pm

Post

a what ?? :wtf:

Chingon
Posts: 2802
Joined: Sun Jul 06, 2003 8:45 am
Car: 1991 and 1992 hatchbacks

Post

[ZERO-S] wrote:Get a stronger spring?


That's what I'm thinking, but where or which?

navysnail
Posts: 3335
Joined: Wed Feb 11, 2004 1:33 pm
Car: 1990 Nissan 240SX fastback

Post

the spring would be the pressure plate, you replaced that too when you did your clutch right?

Chingon
Posts: 2802
Joined: Sun Jul 06, 2003 8:45 am
Car: 1991 and 1992 hatchbacks

Post

no, the spring would be the return spring located inside the master.

180fan
Posts: 7799
Joined: Sat Dec 14, 2002 12:16 pm
Car: 89 fastback

Post

Yeah I'm having the same problem with mine. The pedal's way soft. OEM clutch or not, the pedal's not as stiff as my buddy's stock s14 clutch, no where near as stiff as my toyota buddies clutch pedals either. I know there has to be a way to make the line stiffer. I don't have any air, and also have the damper loop removed with a stainless line.

User avatar
240 Trainee
Posts: 749
Joined: Mon Apr 14, 2003 5:41 am
Contact:

Post

I have a Spec Stage 3 clutch, with a stainless steel clutch line, and I deleated the damper system, an I get a soft feel as well. Kinda weird...

rousie13
Posts: 4106
Joined: Fri May 09, 2003 5:55 pm
Car: 2006 Nissan 350z Track Edition, 1997 Ford F250 4X4
Location: Delaware, OH

Post

I also have a stock clutch with soft pedal feel. It engages fine and functionis perfectlly, so not going to worry about it.

Chingon
Posts: 2802
Joined: Sun Jul 06, 2003 8:45 am
Car: 1991 and 1992 hatchbacks

Post

This is "chingon's brother" speaking....and I guess if you are used to the soft pedal, than it's fine and all, but I find it it's much easier to shift w/my hard pedal. In other words, I feel a much better control in-between shifts...of couse, I don't drive my bro's car much, so that may just be lack of experience w/a soft pedal. However, i think that anyone who has a stiff pedal will agree, there is a much better feel and feedback from what the car is doing...

Any ideas on what I can look in my own car that may cause this "stiff" feel so that I we can do it to my bro's and pass the knowledge here?

Chingon
Posts: 2802
Joined: Sun Jul 06, 2003 8:45 am
Car: 1991 and 1992 hatchbacks

Post

I really doubt that the little spring inside the master cylinder would have enough resistance to make the pedal hard. maybe the pressure plate like 240kid mentioned

User avatar
skydragoness
Posts: 9394
Joined: Wed Jul 24, 2002 6:49 am
Car: 03' 350z Touring 6spd
92' 240sx 60k survivor :)
Location: North DFW, TEJAS
Contact:

Post

BACK FROM THE DEAD BUMP!!

I'm curious if you (Chingon) ever found out what it was that was making the clutch soft? I just drove home from work today, and I noticed my clutch was softer than usual, (which was already softer than my bf's fastback anyway). My car has 102k and a new slave cylinder and SPL clutch line, properly bled this past fall.

Luckily I have a Exedy OEM clutch heading my way for X-mas, although I'm curious if you guys have ever adjusted the tension on the clutch arm? A friend of mine did that for me a few years ago on my old S13 and it was a lot firmer but then the clutch started slipping, which led me to believe my old S13's pressure plate was probably on its way out. In your case though, you have a new clutch right? I'd try the tensioner. I hate how soft my clutch is, does anyone know what the lb-rating is for the clutch? I think I'd like something like 30-35lbs.

User avatar
dickie
Posts: 16559
Joined: Tue Sep 06, 2005 7:55 am
Car: Killer Turtle

Post

you could always remove the clutch damper system like this guy did

go to guides and you can see it from there

Sil40_Mayhem
Posts: 3165
Joined: Fri Aug 15, 2003 9:35 am
Car: 1995 Nissan 240SX 5spd
1992 Acura Integra LS

Post

Oddness. The S14 I test drove last week had an uber soft clutch pedal, but it engaged smooth and fine. On the flipside, the clutch in mah Teg is so hard that I swear my left leg now is as powerful as that of an olympic high jumper.

TheOne
Posts: 1836
Joined: Mon Aug 09, 2004 4:28 pm
Car: 93 240sx FB
Location: Arlington, TX

Post

mine feels soft too! i replaced the clutch not long ago and it feels soft, i drove my friends S14 and it felt hard, my friend drove mine and even he said it felt too soft.

the clutch still engages fine.

InsanityInc
Posts: 2521
Joined: Wed Aug 18, 2004 7:43 am
Contact:

Post

skydragoness wrote:Luckily I have a Exedy OEM clutch heading my way for X-mas, although I'm curious if you guys have ever adjusted the tension on the clutch arm? A friend of mine did that for me a few years ago on my old S13 and it was a lot firmer but then the clutch started slipping, which led me to believe my old S13's pressure plate was probably on its way out. In your case though, you have a new clutch right? I'd try the tensioner. I hate how soft my clutch is, does anyone know what the lb-rating is for the clutch? I think I'd like something like 30-35lbs.
Tension on the clutch arm? Huh? Is there some way to adjust the clutch fork that i've never heard of?

User avatar
Red coupe
Posts: 12216
Joined: Wed Sep 15, 2004 6:51 pm
Car: 92 Nissan 240sx Coupe

Post

Maybe he just bent the diaphragm spring some how so it was pressing on the pressure plate harder? would probably leave the clutch some what engaged and cause it to wear out faster like she mentioned.

Chingon have you checked your brothers car to see if his dampener is still in place? that link d!ck gave should have some pictures...

User avatar
yessir240
Posts: 1673
Joined: Sun Jan 16, 2005 4:56 pm
Car: s14 zenki

Post

is your clutch dampener off?

User avatar
skydragoness
Posts: 9394
Joined: Wed Jul 24, 2002 6:49 am
Car: 03' 350z Touring 6spd
92' 240sx 60k survivor :)
Location: North DFW, TEJAS
Contact:

Post

Red coupe wrote:Maybe he just bent the diaphragm spring some how so it was pressing on the pressure plate harder? would probably leave the clutch some what engaged and cause it to wear out faster like she mentioned.

Chingon have you checked your brothers car to see if his dampener is still in place? that link d!ck gave should have some pictures...
Yeah, i think that's what he did because I drove my mom somewhere the next day and the clutch started slipping pretty bad after 3,500 rpm, so I had to pull it in to an Advanced Auto parts store and buy some tools to loosen it up so we could actually get home. My mom was so pissed cause it took me an hour of fanoodling in 90 degree weather. That was years ago.

As far as my dampener goes, i figured I didn't have to mention I removed/bypassed it w/ the SPL line--because you *have* to remove the dampener when you put the line on. But yesterday on my way home from work its starting to engage closer to the floor than I would like it to. My clutch doesn't slip, and it engages adequately, its just a little creepy. I'm wondering its just a sign of a pressure plate going or a bad master clutch cylinder.

grosspolluter
Posts: 154
Joined: Sat Nov 12, 2005 10:17 am
Car: Nissan Skyline

Post

The rule of thumb is: Soft clutch pedal = Soft driver.

User avatar
skydragoness
Posts: 9394
Joined: Wed Jul 24, 2002 6:49 am
Car: 03' 350z Touring 6spd
92' 240sx 60k survivor :)
Location: North DFW, TEJAS
Contact:

Post

grosspolluter wrote:The rule of thumb is: Soft clutch pedal = Soft driver.

phuphyter
Posts: 1456
Joined: Sun Aug 22, 2004 8:14 pm
Car: 2002 Infinity G20

Post

^ x2grosspolluter, elaborate please.

It took a while until someone mentioned the clutch damper.

User avatar
Red coupe
Posts: 12216
Joined: Wed Sep 15, 2004 6:51 pm
Car: 92 Nissan 240sx Coupe

Post

skydragoness wrote:
That doesn't seem to be what they say at all....

User avatar
Red coupe
Posts: 12216
Joined: Wed Sep 15, 2004 6:51 pm
Car: 92 Nissan 240sx Coupe

Post

skydragoness wrote: But yesterday on my way home from work its starting to engage closer to the floor than I would like it to. My clutch doesn't slip, and it engages adequately, its just a little creepy. I'm wondering its just a sign of a pressure plate going or a bad master clutch cylinder.
If the pressure plate or clutch disc were worn the pedal would actually rise. The pressure plate is not pressed against the clutch disc directly by a spring. The spring acts on one side of a level with its fulcrum in the middle, and the other side pushing against the back side of the pressure plate. so when the pressure plate moves inward as the clutch disc wears thinner the throw out bearing moves outwards, making the pedal rest higher.

In case that didn't make sense just look at the picture

User avatar
frosti108
Posts: 427
Joined: Mon Nov 07, 2005 6:29 am
Car: rb s13 coupe

Post

back from the dead.... but... we have a ka24e... we put in a new throwout bearing clutch disk pressure plate slave cyl master cyl and the dampner box is removed... bled many times, adjusted the pedal all kinds of ways.... still have a super soft clutch pedal. WTF???? i think the new slave could even be bad even though its like the 2nd or 3rd one weve put in... any suggestions??

how about pedal springs anyone ever take them out>?


Return to “240sx General Discussion”