Today at Atelier Kaz - ex-Honda R&D, F1, Indy/CART engineer

Flushed the accumulator twice with fresh fluid and then moved onto four solenoids.


While pressurising the accumulator, I noticed tiny amount of bubbles coming out of the return port.


This means that at least one of the solenoid is leaking.


After flushing one solenoid, the reservoir was emptied and fresh fluid was pumped into the accumulator to replace as much fluid as possible inside the system.


Good news. None of the solenoid was seized.


After flushing all four solenoids, the accumulator was flushed again for two more times and then pressurised.


This time, there was no fluid felt at the return port so I hope the solenoid leakage has stopped.


Having said this, I know on some of the ABS especially the very original design like this one may experience the solenoid leakage within a short period even after being serviced.


It would be interesting to see the behaviour during the test driving session.


Kaz