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sudden brake failure
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16-08-17, 09:34 AM
Try bleeding the brakes again but crack the banjo bolt next to the master cylinder instead of the caliper bleed nipple (put a rag underneath the cylinder of course). If the fluid splutters/spits when you pump then you've found the air bubble that can hide there. I do this everytime I bleed the brakes on my Fazer, sometimes there is air there, sometimes not.
16-08-17, 11:53 AM
Guys a massive thank to you all for the helpful posts. Not 100% sure until I have replaced the offending part, but it looks like its the front wheel bearing. When I'm riding the pistons are being pushed back by the extra movement that the worn wheel bearing is allowing. So when I brake, the pads have more travel to reach the disk, hence no brake. Then when I pull the brake again immediately after they are working, coz the pistons are back where they should be. I will get a new bearing later this week and hopefully that will be the end of the problem
16-08-17, 02:36 PM
depending on the hose layout, it could still be air in the system. Bleed each caliper separately starting at the one furthest from the master cylinder. Before you do that though, leave the bike overnight with the brake lever pulled back to the bar as far as you can and secured with a tiewrap to try and let any air rise out of the system. It will need a few pumps in the morning to get the pressure back though.
Another ex-Fazer rider that is a foccer again
22-08-17, 10:43 AM
Just to complete the story. I have changed the bearings and the brakes are now back to 100%.
I didn't feel the dodgy bearing whilst I was riding the bike, but I confess the handling is a bit tighter now. Would never have thought of checking a bearing to sort a brake problem. So again my thanks especially to Unfazed.  
22-08-17, 03:25 PM
Good to know your up and running Added to my mental notes for future ref:
28-08-17, 01:46 AM
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