Bleeding brakes or a clutch system The correct method is to use a vacuum pump and the bleeding kit that comes with it. The kit is a small bottle to hold vacuum and several hoses.For lack of a pump. Open the bleeder screw, have a helper push the pedal to the floor slowly, tighten the screw let the pedal return repeat as necessary. Be sure to keep the fluid full.Or install a hose on the bleeder screw and insert it into a container filled 1/2 way with brake fluid. Open the bleeder screw and have someone pump the clutch pedal slowly until no bubbles are present.Clutches can be a problem to bleed one method I have used with success is to remove the master cylinder cover and let it sit overnight. Doesn’t hurt to give the pedal one very slow pump when you remove the cover, use caution as fluid will squirt out on the return stroke. On a rare occasion I have had to remove the master cylinder and bench bleed it, install adapters with hose in pressure line route to fluid container and pump. Be sure the bleeder screw is higher than the rest of the cylinder. With ABS a scanner may be necessary if air has entered the ABS system module.