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Mityvac question

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Old Mar 8, 2015 | 04:39 PM
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Just a quick question, while bleeding your clutch with a mityvac is there anyway possible it could push back air into the system like I've been told? I would think that would be impossible because it's a vacuum.
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Old Mar 8, 2015 | 05:11 PM
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ahh...it makes vacuum so I don't see how it "pushes" air back in system.

if you disconnect it and there is a bubble still in the system that has not reached the Mighty Vac then yes the suction from the MC/Slave when released causes loss of vacuum which would pull the bubble back.

I find using low PSI, around 5-6, works better as to much will suck fluid out also
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Old Mar 8, 2015 | 05:36 PM
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Sorry I mean't make it have more air than it did to begin with I guess is what I mean. Which your answer obviously means no not possible, unless the air was already in it to begin with thats all that can get in it
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Old Mar 8, 2015 | 09:47 PM
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I did it is to about 15 psi. Pulled quite a bit of air out.
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Old Mar 9, 2015 | 04:13 PM
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feels worse than before though, I may have pulled some of the fluid out and replaced it with air..
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Old Mar 9, 2015 | 04:24 PM
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Make sure you bleed valve on you slave is shut
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Old Mar 9, 2015 | 05:28 PM
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It is, if I pump the mityvac it is just bubbles like crazy coming up the line but if I hold it at 10-15psi it brings up bubbles for a bit then stops
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Old Mar 10, 2015 | 11:37 AM
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Originally Posted by Sladester2
It is, if I pump the mityvac it is just bubbles like crazy coming up the line but if I hold it at 10-15psi it brings up bubbles for a bit then stops
15psi will likely suck up fluid as well as bubbles...lower psi...take your time
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Old Mar 10, 2015 | 06:44 PM
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Thanks I got it pretty good I think now, no more dirty fluid at all and everything is full.
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