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Old 12-08-2012, 02:14 PM   #1 (permalink)
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Default Using fire to seal air in brake flush...

I read or seen this somewhere and can't seem to find it anymore. I am planning on flushing and replacing my brake fluid and I read/seen somewhere someone lighting the tip of the hose for like a second and then placing it onto the bleeder nipple to get an air tight seal. The fire expands the end of the hose and then when placing it onto the bleeder nipple, it cools and sort of conforms to the shape of the nipple, if that makes sense. Lol, And then when your done, you can just re-burn that part or can cut it off and repeat the process. this is not me talking, just got it from somewhere but can't remember where. Has anyone else tried this?
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Old 12-08-2012, 02:19 PM   #2 (permalink)
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Use a ziptie.
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Old 12-08-2012, 02:26 PM   #3 (permalink)
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My bleeder tube is plenty tight to begin with.

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Old 12-08-2012, 04:19 PM   #4 (permalink)
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I think using fire near your bike is a great idea that couldn't possibly have unforseen consequences...

If you're that worried about it, try a heat gun on the tube. Or better yet, buy the right size tygon tube.
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Old 12-09-2012, 06:16 AM   #5 (permalink)
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If you knew what the hell is really going on with a brake bleed, you would be just as concerned with making the bleeder screw threads airtight.
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Old 12-09-2012, 08:32 AM   #6 (permalink)
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Yeah OP, you're over thinking this. The right size tube is all you need. When it slips over the nipple it'll seal itself. Check out an auto parts store or pet store for tubing (fish tank section).

What I've done in the past is use a set of needle nose pliers to stretch the end of the hose slightly. That was really because the hose was a bit small to slip over the nipple as is. Sev's suggestion of a heat gun sounds like a better option though.
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Old 12-09-2012, 11:48 AM   #7 (permalink)
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teflon tape and speed bleeders.
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Old 12-09-2012, 12:00 PM   #8 (permalink)
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teflon tape and speed bleeders.
That has nothing to do with the OP's question.

He's merely concerned about getting a good seal from the bleeder to the piece of tubing the old brake fluid will be collected in. The proper size tubing should do. I have never had a problem with fluid or air getting past.
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Old 12-09-2012, 05:35 PM   #9 (permalink)
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Thanks for all your responses guys. The tube is the right size and tight enough, but I was just curious...
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Old 12-09-2012, 07:22 PM   #10 (permalink)
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Spend the money for a mity vac and solve the problem. Use a paper towel to soak the dirty fluid out of the brake and clutch master cylinder then fill it with new fluid. Mity Vac is a small vacuum pump with a hose and rubber fitting to go over the bleed nipple then you pump and it pulls the new fluid thru. It is easier if you have someone to keep pouring brake fluid in while the Mity Vac is pulling the clean stuff thru.

Yes I know that is not what he asked but it is the easy and quick way. The pump the brake and clutch levers is old school.

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