Have you tried this –
Hold the syringe upright, as before, and gently pull on the plunger to ensure there is no more air present. Press in the actuator while pulling up on the plunger of the syringe, then push down on the plunger as you allow the actuator to return to its normal position. Repeat this process five to 10 times to ensure there is no air inside the actuator.
Turn the speed adjuster fully to the fast (or ‘+’) position, then back to slow – repeat this three times and leave in the fast position (or ‘+’) direction. Again, pull up on the plunger to remove air.
Push on the plunger and return the speed adjuster to the slow position. Push in the actuator, then apply pressure on the syringe, slowly releasing the actuator to its extended position. You can now unscrew the syringe and return the bleed port screw.
I know it’s part of the standard bleed, but prob where any errors occur