I was looking at a vacuum pump to change the brake fluid in my truck. I ran across this video that shows how to do it with just a hose and a pop bottle. Is this actually possible? When you let up on the brake, what keeps it from sucking dirty fluid back through the hose instead of through the brake line? I watched a similar video where he set the bottle on top of the axle. That would make it even easier to suck dirty fluid back in. I'm no mechanic but I've always been taught that you need 2 people if you don't use a vacuum pump.
A couple years back I swapped out a complete rear axle assembly on my 92 Toyota PU. That is exactly how I bled the air out of the reconnected brake lines. A couple feet of 1/8 inch vinyl tubing (for any vehicle I have worked on) and a pop bottle.
It would have gone faster with a second person to keep the master cylinder reservoir full.
People who choose to brew up their own storms bitch loudest about the rain.
