floor near clutch soaked with brake fluid

rrwebster · rrwebster's Garage

I've noticed my brake fluid disappears quite soon...

Started parking on cement so I could see what was leaking where. Under the foot area, leaking through the floor to the ground is brake fluid... inside the car the carpet is soaked. where could this be coming from because it's not obvious.

thanks in advance.

Robert

mikepellegrini · mikepellegrini's Garage

Sounds like you need a new clutch master cylinder. Porsche 924S/944/968 Clutch & Flywheel - Page 3

wild man · 05-21-2010, 08:35 AM

+1 on master cylinder having a blown (or excessively worn) seal.

rrwebster · rrwebster's Garage

Yes... having an idea where to look I see the fluid dripping from it.

Is this replaced from under the hood or from under the dash?

I keep at this car and I will soon be a certified Porsche mechanic!!!

krystar · 05-21-2010, 01:12 PM

probably under both.

Grandad#3 · 05-21-2010, 02:05 PM

Remember clark's garage .com is your maintenance help friend. Go to the link below and it lays it all out step by step. If you replace the Master Cylinder you should also replace the Clutch Slave Cylinder as it will soon fail. You have to clean the carpet real good as the brake fluid eats paint.

Clutch Master Cylinder Replacement

Cheers,
Larry

looneybin · 05-21-2010, 02:07 PM

i just did that repair last weekend
The gash on my hand from the clutch pedal slamming down on it still is not healed.

The writeup on Clarks Garage is very good, getting the bolts off of the master and removing the fluid line from the end are a PITA if you have A/C with the hard lines running over the top of the master.

you WILL need to remove the drivers seat to get under the dash

p-talk · p-talk's Garage

Did both my clutch slave and master last year, not too bad. Don't be afraid to get creative on the master - wobble extensions, adapters, whatever it takes to get in there. Also, I didn't have to take out my seat, but I'm a skinny F-er

.

On the clutch slave, be SURE to "wake up" the bolts per Clark's normal recommendation. Failure to do so may turn your simple repair into a nightmare!

.

Quote:

Originally Posted by looneybin

i just did that repair last weekend
The gash on my hand from the clutch pedal slamming down on it still is not healed.

The writeup on Clarks Garage is very good, getting the bolts off of the master and removing the fluid line from the end are a PITA if you have A/C with the hard lines running over the top of the master.

you WILL need to remove the drivers seat to get under the dash

Mark944na86 · 05-22-2010, 01:26 AM

Before shelling out for a new MC, check the condition of the rubber gaskets that hold the fluid reservoir onto the MC. One of mine had perished and was leaking, and I thought I needed a new MC until I found out it was just the gasket -- very cheap and easy fix if that's the case!

wild man · 10:10 AM

His is leaking from the INSIDE. The only thing it could reasonably be is a failed O ring (the one that forms the outer seal for the the piston). I'm staring to wonder now if it wouldn't be easier (and cost alot less) to just extract the piston out of the cylinder from the inside of the vehicle (if that's possible), and replace the outer seal. All one would have to do then is replace the piston back into the cylinder, and bleed it out.

HondaDustR · 05-22-2010, 10:43 AM

Quote:

Originally Posted by wild man

His is leaking from the INSIDE. The only thing it could reasonably be is a failed O ring (the one that forms the outer seal for the the piston). I'm staring to wonder now if it wouldn't be easier (and cost alot less) to just extract the piston out of the cylinder from the inside of the vehicle (if that's possible), and replace the outer seal. All one would have to do then is replace the piston back into the cylinder, and bleed it out.

You can buy replacement pistons as well as a seal kit, although the seal kit is a little tricky to find. I eventually found one on the NAPA website, as neither Pelican nor the dealership has a rebuild kit for the master. As long as the bore is in good shape, it should work. Rebuilding it from inside the car sounds like a cool idea. After all, it's just a spring clip on the pedal side holding everything in. My rebuilt one has lasted at least 3 years/40,000 miles and it cost like $20 and an afternoon.

rrwebster · rrwebster's Garage

Hmmm, cheap and easy... I like the sound of that one!

$37.79 plus shipping at rock auto... Terrific!!!

thanks!

Robert