Hope tech 3 E4

[Myles_mtb]

Hi Emtb community.
I have hope tech 3 E4 brakes. I managed to absolutely cook my brakes in Scotland, as I was too scared to go as fast as I was doing. Since then I have discovered my pistons were sticking as a consequence. I have replaced the pistons that needed replacement and replaced the seals all round. However, I now have the pistons moving again, but there is no bit in the brake. There appears to be no air in the system but still no power.
Can anyone suggest anything in how to find potentially trapped air, or something that could be stopped the power.

 

[Cb750stu]

I have the same brakes , I remove my front brake completely when bleeding making sure the caliper is level and lever is always higher than the caliper, with the rear I just turn the bike in the stand to get the same scenario , gently tapping the caliper with a small screwdriver handle is what I do last to get rid of any trapped air in the caliper, I'd say you have trapped air behind the pistons after removing them and fitting new ones