[terrywang]

Purchased bleeder screws (a pair), replace the existing one with a new one, it performs even worse than the original one(thought to be stripped).



I inspected the original one, it definitely has had better days (I can see marks of abuse by mechanics worked on it) but the treads are good. I used brake cleaner to give it a good clean and wipe, put it back in and hand tight, then torqued it to 10Nm, stepped on brake pedal immediately after several times, no sign of leak around the screw neck.

One thing I noticed: there was blue threadlocker like stuff at that the original bleeder valve screw's neck (right below the hex that goes into the caliper threads).

Does anyone know if blue threadlocker is used on bleeder valve screws? cc F87source

Thanks in advance.