Read brakes

[rjdgriff]

Pump up your brakes, put vac on bleeder, pump up the vac (should hold pressure) and the lightly crack the nipple. Should create suction.


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[Rawnold]

Yeah I understand the process guys but, I'm not so sure you guys are understanding my issue. Original bleeder nipple isn't letting anything through, the other nipple allows suction but then it fills right back up with air. Is there any other way to test my caliper to make sure it's holding pressure? Cause I don't think it is.

[ginger]

you need to tighten the bleeder before it can suck air in......

[Rawnold]

15 minutes ago, ginger said:

you need to tighten the bleeder before it can suck air in......

It will suck air in even with the vac hose connected to it? I thought it was vacuuming it so it shouldn't suck air? I was under the impression that's how you can test if your lines are air tight 

[ginger]

as long as there is still vacuum and fluid coming out.  if there is no vacuum it will let air back in. 

[Rawnold]

4 minutes ago, ginger said:

as long as there is still vacuum and fluid coming out.  if there is no vacuum it will let air back in. 

Exactly, with the good bleeder nipple I can get it to suck but it lets air back in as soon as I stop pumping, it won't stay vacuumed. Does that mean my master cylinder is gone to shit? I don't see any cracks in my line or any damage anywhere

Edited June 26, 2017 by Rawnold

[ginger]

it wont keep vacuum on its own.  you are supposed to tighten the bleeder before the vacuum goes to 0.  eventually you should be getting straight fluid and no air out the bleeder, and then tighten it up before it looses vacuum.  

if you are struggling, you tube how to bleed brakes with a vacuum pump. 

[Rawnold]

17 minutes ago, ginger said:

it wont keep vacuum on its own.  you are supposed to tighten the bleeder before the vacuum goes to 0.  eventually you should be getting straight fluid and no air out the bleeder, and then tighten it up before it looses vacuum.  

if you are struggling, you tube how to bleed brakes with a vacuum pump. 

Tried it like this and still nothing, I feel like my cylinder is bad or something along the way is leaking air in, because i can get some fluid to come out but always the same bubbly fluid, doesn't feel like it's building pressure at all. Tried vacuuming then pumping the pedal a few times and still nothing

[ginger]

it took me vacuuming a long time.  are you raising the back of the quad up at all so the air can work its way out? 

[Rawnold]

7 minutes ago, ginger said:

it took me vacuuming a long time.  are you raising the back of the quad up at all so the air can work its way out? 

Haven't tried that, but shouldn't I at least feel some pressure building? Cause I don't feel any

[ginger]

not if you dont get pretty much solid fluid coming out.  air compresses vs fluid not a lot. 

[rjdgriff]

It's not just going to magically have pressure after a few pumps. Jack the rear end up like previously said, get your vacuum going, then crack the bleeder, let it suck, shut bleeder before the vacuum is gone. It's quite simple once you figure it out. It's still not an instant fix off of 1 time. Repeat over and over and over and over until no air bubbles come through. ABSOLUTELY DO NOT LET THE BLEEDER SUCK ANY AIR BACK IN!!!


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