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@miloas
Ultegra 12 speed Di2 lever to a hope rx4+ calliper.
Front brake was installed and bled without issue.
Rear brake isn't bleeding. I can push mineral oil from the calliper upwards (tested by removing calliper and checking mineral oil flows), but there's a blockage (presumably) somewhere between the lever and hose.
My plan was to remove the hose and check flow in the lever (ie. Push mineral oil through the lever and check it's coming out the lever opening), and maybe sticking a gear cable through the hydraulic hose.
Anyone had any experience clearing a blocked hose/lever before? And if I remove the hydraulic hose, but keep all the fittings in place (olive and barbs), can I then reuse it but screwing it back into the lever/calliper?