Spongy Clutch

Website · Post by **WidebodyWoody** » Mon Dec 10, 2007 7:30 pm

Hey guys, I am wondering if a leaky slave clutch cylinder can cause your clutch to be spongy. My clutch doesn't slip at all, and it has been spongy ever since my fluid went below the MIN mark. Yes I have bled the line and there is no air in it. The fluid stayed fine for about 8 drives, then it disappeared below the MIN mark again. From above the engine bay, I can't see it leaking anywhere near the master cylinder.

Could it be the slave cylinder, and would that explain the spongy clutch? Cheers

MR Bender · Post by **MR Bender** » Mon Dec 10, 2007 7:44 pm

i would say it would be the slave cylinder that would make it feel spongy the piston in the slave cylinder would be worn down !!!! this would be the time to get it all rebuilt and make it good as gold XXXX
:beer

redzone · Post by **redzone** » Mon Dec 10, 2007 8:11 pm

i can get brand new ones cheaper than i can get em resleeved these days!

and yes woody i'd say thats the problem. also the clutch will be dragging etc, or it will be soon....

Website · Post by **WidebodyWoody** » Tue Dec 11, 2007 6:45 am

ok awesome. How much dave? I need it before this weekend. I was going to rebuild it on the weekend, or maybe during the week. Thanks

Sargeant_Khan · Post by **Sargeant_Khan** » Tue Dec 11, 2007 7:57 am

yes dave, how much? how much for a master aswell?

enthuzed · Post by **enthuzed** » Tue Dec 11, 2007 8:31 am

Something to bear in mind with buying a new one verses resleeving - The stainless sleeves don't suffer from the pitting that a new one will so they last longer. The pitting is caused by the fluid sitting in the bore and once it has started it doesn't last long. I've heard of people only getting 2 or 3 years out of a standard slave cylinder.

In terms of value for money, either way is okay.

So it may just be a question of what you could get in your hand quicker....

JD_Stazza_Brendan · Post by **JD_Stazza_Brendan** » Tue Dec 11, 2007 8:53 am

I got my slave cylinder stainless sleeved. Dropped of lunchtime, picked up next arvo.

Doesnt take long to do, all depends how much work the place has on.

Website · Post by **WidebodyWoody** » Tue Dec 11, 2007 9:16 am

I wanna know costs. I really need to get this done before the weekend, because it isn't the best to drive with. You guys do want me to come right LOL

redzone · Post by **redzone** » Tue Dec 11, 2007 7:04 pm

$80.25 for a new one, will check what price master was tomorrow

Website · Post by **WidebodyWoody** » Tue Dec 11, 2007 10:15 pm

ok now I am VERY confused.

I took a closer look at it all tonight, but it doesn't make sense to me. Can someone enlighten me please.

The slave cylinder looked fine. However the MASTER cylinder looked like it had been leaking from the lower part that connects to the firewall. It is dry, but I would expect that because it hasn't been driven in a few days. Also the pipe that runs from master to slave is starting to get a little hole in it. I don't think its through yet. (due to heat shield rubbing). So I put a rubber hose between it for now.

What I don't get is if the master cylinder is leaking, why is the clutch spongy? There is no air in the line? Is it just that it isn't pressing enough fluid through? Thanks.

JD_Stazza_Brendan · Post by **JD_Stazza_Brendan** » Tue Dec 11, 2007 10:37 pm

If youve got the money handy, Replace both the master and the slave. And if the hose is dodgy get another.

Peace of mind then as you probably dont know when they were last done.

Website · Post by **WidebodyWoody** » Tue Dec 11, 2007 10:57 pm

I could pretty much safely say that they were never done. I am basically second owner, and the car is only 100,000km old. I have done half of that myself

I really just want to understand whats going on. I know I have to fix the master cylinder, but understanding why its spongy would help me heaps. Cheers

JD_Stazza_Brendan · Post by **JD_Stazza_Brendan** » Wed Dec 12, 2007 5:42 am

Mine was getting spongy, The Master was pitted so fluid would bypass the valve slightly. There was no visible leaking.

redzone · Post by **redzone** » Wed Dec 12, 2007 7:29 am

yes master cylinders can bypass fluid internally, if the cups are worn they can flip over and back inside the bore. also woody check the master for leaks INSIDE the car, where the pushrod goes into the cylinder from the pedal. u may see gooey leakage there..

Website · Post by **WidebodyWoody** » Wed Dec 12, 2007 10:45 am

yeah ok thanks. I will have to have a look inside :'( I hope not. But doesn't matter, atleast I know whats wrong finally. Cheers

Austarion

Spongy Clutch

Spongy Clutch

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