I've read that gravity bleeding is the safest way to bleed the brakes. However it may be time consuming and may not push out crap that is in the system.
So then there is pressure bleeding. Very effective and safe however it is limited to adapter sizes. Which does not work with all vehicles.
The old school pump and hold method, is bad for the master cylinder's seals because the plunger is required to travel further. Even putting a 2×4 wood block would still hurt the primary seals. One person method also falls in this situation.
Then we got the common vacuum bleeding with shop air connected to suck out the dirty fluid which sounds great. But some are saying it may be misleading because it sucks out air from the system however, if the bleeder screw of the fitting is too loose it may suck air around the bleeder screw. So what if we apply silicone grease around the fitting, make sure the hose has a tight connection, and crack the bleeder screw as little as possible, enough to suck the old fluid, would this method be effective enough to suck out all the air from the system? End results with firm hard pedal with no to little air left?
Any input on this?
Thank you for any constructive information.
So then there is pressure bleeding. Very effective and safe however it is limited to adapter sizes. Which does not work with all vehicles.
The old school pump and hold method, is bad for the master cylinder's seals because the plunger is required to travel further. Even putting a 2×4 wood block would still hurt the primary seals. One person method also falls in this situation.
Then we got the common vacuum bleeding with shop air connected to suck out the dirty fluid which sounds great. But some are saying it may be misleading because it sucks out air from the system however, if the bleeder screw of the fitting is too loose it may suck air around the bleeder screw. So what if we apply silicone grease around the fitting, make sure the hose has a tight connection, and crack the bleeder screw as little as possible, enough to suck the old fluid, would this method be effective enough to suck out all the air from the system? End results with firm hard pedal with no to little air left?
Any input on this?
Thank you for any constructive information.