Thread: Brake Bleeding question

I had clogged bleed screws on mine.
Had me stumped for quite a while.
I'd usually start bleeding from the longest pipe, left rear?.
If you pull the bleed screw all the way out, with the filler cap removed, the fluid should slowly seep out .

Do you have single or dual circuit brakes? Have you got pressure at the inlet to the wheel cylinder?

If you have the bleed nipples with the small ball bearing in them I have found sometimes it takes quite a bit of pressure to loosen the ball if they have been overtigtened

Ok, not sure about those things, but just jacked up the back, spun the wheels, and put on the brakes, and they just keep spinning

Looks like i'll be needing to take off brake lines and put some air through them and see whats going on.. Must some kind of blockage...

Correct me if im wrong, if the rear slave cylinders where stuffed, oil would still come out of the bleed nipple yeah??

OH, and i tried it with the nipple's taken completely out... and there was still nothing...

Thoughts?

Oh, i just had a look, there is one line coming from the master cylinder to a 4 way junction type diverter.

So, one line coming in, then 2 lines going to the fronts (one either side) then only one line going to the rear brakes.

Do i undo from the junction and test? Then put back and then undo at the flex hose near the rear axle and test, then put back and then undo side at a time at the slave cylinder, checking each time if fluid comes out????

Cheers

The wheel cylinders could be full of crap. Starting at the junction would make sense as you know that the lines are clear to there if the front brakes work.

Start at the rear left.
Would be good if you could get someone to pump the pedal up and hold it while you undo the brake line to the wheel cylinder. Fluid should come out.
If not you may have a squashed line back towards the 4 way splitter.

Where in Brisbane are you ?

No squashed line. Checked for that.

No fluid coming out

I'm on bribie island.

Is the pedal hard, feels normal?
If it's soft then keep pumping.
Hard would point to a blockage.

yeah peddle hard,

Blockage is what i thought...

Scary to think, that for the last 12 months i've had it, it's most likely been this way the whole time



Luckily the fronts is what really pulls us up......