Bleeding a new brake system

[rflud]

Anybody ever use the hand-pump style bleeder kits? I have one and I just started bleeding my brake system (all new). I first bled my M/C and then hooked up the lines and went to the passenger rear to start bleeding. Hooked up the bleeder pump and opened the bleeder screw and started pumping. And pumping, and pumping, and pumping...you get the idea. Well I emptied my first quart and still have a ton of bubbles. What's the deal? I don't have any leaks anywhere so where is all the air coming from? Can there be that much air still in the lines?

 

[2badrotties]

All that air is kinda normal when all the lines are brand new. Keep pumping. I usually open all of the bleeders on a new system and just let the fluid run out a little before I bleed them. Keep pumping

 

[jims66]

Get speed bleeders!

 

[rflud]

I think that with the hand pump it won't suck air back in the system so you don't have to keep tightening and loosening the bleeder screw. So I don't think speed bleeders would be the answer.

 

[jims66]

[quote author=rflud link=board=5;threadid=13746;start=0#103368 date=1043725610]
I think that with the hand pump it won't suck air back in the system so you don't have to keep tightening and loosening the bleeder screw. So I don't think speed bleeders would be the answer.
[/quote]

True, but you can use the master cylinder to do the work and it is a much bigger pump than the little vacuum pumps. It is also a lot more powerful!

 

[YellowBronc]

Are you positive the air is coming from the lines? I use the vacuum pump also but can never get a "perfect" seal around the bleeder valves. The pump has plenty of vacuum to pull fluid through the lines and not allow air back into the system. I would think a quart of fluid is more than needed to clear any air.<br><br>I would bleed the other three and check to see how the pedal feels. If it is still spongy (sp?) then you obviously didn't get all the air out and my thought for the day is worthless.<br><br>Good luck

 

[supermottl]

Dude, <br>last winter/spring I did ALL NEW brakes/lines/etc, and I bled a freaking giant thing of brake fluid through it and still needed more. I kept getting a pedal to the floor and double bumping syndrome. I finally got it, and when it was time for the NYS inspection, I had them beed it once more (for an experienced hand at it). Maybe I just did it wrong, who knows, but it's faboo now...

 

[Allen_69]

The air may be coming from the other rear brake line, try bleeding that one then go back to the first one.

 

[BOSS3024ME]

I have used both kinds of bleeders and found a real cool and cheap one that is a line that goes on the bleeder screw and you open it pump the brakes and then close it....go to next wheel.<br><br><br>Works great and it was like 3.00<br><br>Paul