Ok, g'day guys n gals...
My name is Macca, and I love ZX14's...
I just got my dream bike 2 weeks ago and it will be getting rego next week but I have come across an issue.
As the title implies, My front brakes are slowly locking themselves on.
Now, the bike is a repairable write off from Vic, it had a broken brake lever so I bought a new one and changed it over. I rode into town for a pit pass and rode it home again no worries.
The next day I rode it in again for another inspection and a couple mins from home the front started to feel heavy. I pulled the clutch in and she pulled her self up to a complete stop without me having to touch the brakes.
I cracked the bleeder on the brake master to let the pressure out and locked it up again and it was fine for the rest of the day.
I suspected it was caused by thermal expansion possibly due to moisture in the fluid, so I put new fluid and bled the brakes up a half million times. They worked fine for maybe 10km then started to lock themselves on again.
Same deal, crack the bleeder to relieve pressure and lock it back up.
Over the last couple days it has been getting worse, with the brakes locking on within 1-2km of home and the same after cracking the bleeder. It even locks on over night when the bike isn't in use.
It was suggested the return valve in the master may have been blocked with bits of rubber from deteriorating lines so I dismantled the master, blew it all out with compressed air and made sure it was spotless. Reassembled wet and re-bled it again with new fluid. (Didn't find anything inside the MC)
Problem still persists.
Side note:
The only damage to bike was scratch fairings and broken lever.
The bike is a 2006 ZX14, non ABS.
No fluid leaks anywhere and the brakes operate as normal when applying and releasing them.
Any help would be much appreciated.