Hi all,

My front rotors and pad change was going so well...

Even fitted some new bleed nipples as the old ones were rounding...

All went smoothly until I came to bleed the brakes!

Pumped my pressure bleeder up to 10-12 PSI and started on the first calliper...

Then something seemed to give way and fluid fizzed out from somewhere, leaked down the jack stand and pooled on the floor!

What just happened?!

I removed the inner arch liner but could see nothing obvious...

 

There’s an overflow that drops below the driver side wheel well just behind the tire. How are you using the bleeder, are you filling the reservoir in the bleeder or topping up the reservoir in the car and then pressurizing?

 

Hey Spyder,

Reservoir was full when I attached the bleeder (which I then pumped up to 10-12 psi)...

 

If you don't pinch the soft line (blue braided) that comes out of the reservoir before you bleed the brakes you will just push brake fluid out the overflow and on to the floor.

 

Ah, OK - that makes sense. Will try again tomorrow…

 

There’s a TSBas venting of the brake fluid is now done through the reserve cap. The vent hose from the reservoir to the wheel
well, the non-vented reservoir cap, and the vented reservoir have
been deleted and are no longer available as spare parts. This
change has been as of production date October 4, 1995

I go back and forth between bleeding brakes on my 1997 993, and 1990 964. After dumping brake fluid on my garage floor at least twice with the 964 (I kept forgetting to clamp the blue overflow hose), I finally decided to just install the venting cap and plug.

 

Many thanks for that. I’ve also previously owned a 964 and a 993 - you’d think I’d have worked this out by now

 

Check too (if you haven't done so already) that the overflow pipe behind the wheel arch shield isn't missing or has dropped down - can be a bit messy otherwise.

 

And remember that brake fluid can be highly corrosive. So a good clean up is called for. This stuff can damage paint in no time.

 

Thanks cjoenk - now sorted, all shipshape and Bristol fashion!