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I am attempting bleeding my brakes for the first time, they are quite spongy. How much brake fluid do i need, following the instruction as per hope website, but the air never seems to leave the tube, nearly used half my supply of oil on one brake!
Usually a few 100ml does it, if that.
You can always cycle it back round if it's clean. Make sure you keep the reservoir full all the time.
Sounds like you're doing something wrong, a 250ml bottle of fluid should probably do about 5 bleeds easily.To bleed, level up master cylinder and remove top cap and rubber diaphragm.Fit 8mm ring-ended spanner on bleed nipple, and a tight fitting length of clear tubing onto the nipple and into a jar.Top up fluid, squeeze lever and hold,open bleed nipple about 1/2 a turn, and then close before releasing the lever.Fluid and bubbles should come through the clear tube when you open the bleed nipple, and the lever should come back to the bar.If the lever doesn't move, then I suspect your bleed nipple may be blocked(very likely if you've not had it's rubber cap on), and will need removing to clear out it's hole (fluid will pour out of the caliper unless you block the hole).Other things to check that may cause a spongy lever are a caliper not sitting centrally over the disc, or a sticking piston, both causing the disc to flex to one side rather than being clamped by the pads.Oh, and after closing the bleed nipple, it's normal to have to pump the lever a couple of times before the pads reset themselves.
Cheers second attempt tomorrow!
wind out the reach adjuster so you get further on each pull of the lever