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I just did a complete brake rebuild. I rebuilt three calipers and replaced the drivers rear with a new one. Also painted the caliper mounting bracket and powerstop brake lines. I used new Russell speed bleeders. After I depress the brake pedal several times I noticed they are leaking at the thread. I then tightened them to 10ft/lbs and they still leak. Since all four are leaking my only guess is the seat on the Russell must not match the caliper seat? I orders 4 OEM bleeder screws and hope that fixes it. Anybody else have this happen? Is there something I am missing?
I've had speed bleeders leak on motorcycles. Replacement was my solution but since multiple are leaking on your car I don't think that will work for you. I'd go back to OEM and hope for the best.
I've done quite a few things, including repairs, on my 2000 Vert. But I've never replaced the bleeder screws. So I know nothing about them. Are you supposed to use Teflon tape? As I said, I know nothing about them. If they have an internal taper/angle that's supposed to seal metal to metal on an angle inside the caliper, and the angle is slightly different, it seems like it should still seal-IF the bleeder screws taper is concentric to the threads. I'd call whoever sold them to you, or the manufacturer, and tell them what's going on. Maybe someone in the supply line got some Chinesium knock-offs?
I rebuilt calipers and replaced the OEM bleeder screws with speed bleeders in April 2014. 15 track days and 25,000 miles later no leaks or seeps since and I have flushed the brake system four more times since 2014.
Best I can remember I got them from speedbleeder.com. They come with sealant on the threads, but that sealant is only for when bleeding with the screw open. If the bleeder seeps after tightening, the problem is with the bleeder screw seat not seating to form a seal in the caliper.
Brake bleeder screw leaking at threads
