Just picked me up a vacuum pump and noticed it said I could bleed my brakes singlehandedly.

The only way I know to bleed brakes is the old two man way....where one guy pumps the pedal and the other cracks the bleeder.

I'm going to be installing a line lock on the front brakes and was curious on any pointers to bleed the fronts with this vacuum pump?

It looks like all you gotta do is top off the master cylinder and then use the pump to suck it thru the bleeder screws? I guess you don't have to have anyone in the car pumping the brake????

I do mine that way.

speed bleaders

So I take it you don't have to have the brake pedal down to do this? Just the suction of the pump is sufficient enough to get the air out of the line?

So I take it you don't have to have the brake pedal down to do this?

That would defeat the purpose of using the vacuum pump.

Just the suction of the pump is sufficient enough to get the air out of the line?

Yes as long you have a tight seal and no air leaks. I tried this on a newer car last year and it was damn hard to get out all the air. The old two man way works just as well.

the main problem I've always run into with Vacuum bleeders ... is the air leak that you get around the bleed screw threads.....
by the time you've got it all sealed up & working properly ...
you could have done it two or three times the old fashion way !!!

That would defeat the purpose of using the vacuum pump.

Ok, I was just thinking you'd somehow need the pedal down to allow the fluid to go from the MC to the bleeder, otherwise it seems like all you're doing is sucking what's left between the MC and the bleeder.

I use a vacuum pump to get it flowing on a dry system, then let it gravity bleed... never had a problem except with DOT-5 fluid. When you think it's about done, a few light taps on the calipers with a hammer to dislodge any trapped bubbles.

The only time I ever pump the pedal is if I've got a system that won't bleed otherwise.

I would also recommend trying a long tube into a container of fluid trick. Preferrably a clear tube and if possible, a clear container too. Make sure the end of the tube is under the fluids level and pump away a few times.

However, I have also tried this and sometimes, I get what 68KMENO mentions. Either air leaks through the threads or the seal between the nipple of the bleeder screw and the tube/hose will also allow air in and out.