Brake bleeding - how to make a pressure bleeder

You wouldn't want to do that! When the fluid started coming out oppsed to the air you would have to run around very quickly doing the bleed nipples up to avoid a horrible mess! :)

One at a time is fine.
 
Also, does anyone know what mm hose size I need to connect to the bleed nipple? I have a feeling it's 8mm, but I know b&q sell hoses of all sorts of sizes, so I may as well pick up some hose.
 
Just be very careful with pressure bleeders, if the pipe or the caps comes off under the pressure, the resulting stream of brake fluid is very likely to end up on your paintwork. Vacuum bleeders are much safer in this respect.
 
Just got back from wilco - they had it all (apart from the cap).

Got a litre of comma dot 4, 2 part glue, and a 3 litre garden sprayer thing - came to around £15. :)

I tried everywhere to find the cap - halfords, motaman, a peugeot dealer (£20 for a cap that they didn't have in stock!), and GSF - no joy. I'll go to a local scrapper tomorrow methinks. :D
 
I used my brake bleeder today and it worked a treat :)

First of all I connected it up with no fluid in and pumped it to get all the old fluid out.

I then filled it up with about 1 litre of fluid, gave it about 17psi and went round one by one with a short length of tube on each nipple and bled them several times until not even any tiny bubbles were coming out :)

Really makes it a one person job and very easy too. Oh and it did self syphon the fluid in the reservoir to the correct level when you release the pressure too ;)

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Those devices are completely useless.

Has anyone here ever seen one in a garage workshop?

Use a suitable nut turning device, and a friend/trained monkey.
 
I'm yet to find a professional mechanic who uses them (pressure bleeders), I have seen them used however, and I've never seen them work properly.


Although the only type I've seen are of the vacuum verity.
 
BigglesPiP said:
I'm yet to find a professional mechanic who uses them (pressure bleeders), I have seen them used however, and I've never seen them work properly.


Although the only type I've seen are of the vacuum verity.
Click to expand...

Forget pressure bleeders, all you need is a piece of rubber tubing to slip onto the nipple and a syringe at the other end. Crack open the nipple and pull the syringe to draw the fluid through (creates a vacuum in the syringe). Much less hassle and mess than any other method and costs a couple of quid.

Fog
 
I'be used an eezibleed numerous times at home before and they work perfectly as long as the cap stays tight on the master cylinder. However they can alegedly cause problems with ABS equiped vehicles.
 
Foghorn Leghorn said:
Forget pressure bleeders, all you need is a piece of rubber tubing to slip onto the nipple and a syringe at the other end. Crack open the nipple and pull the syringe to draw the fluid through (creates a vacuum in the syringe). Much less hassle and mess than any other method and costs a couple of quid.

Fog
Click to expand...


Let me get this right, stick a tube on the bleed nipple, attach a syringe, open bleed nipple and then draw back syringe to "suck out" the fluid. How easy is that, i guess you still have to have someone filling up the reservoir.......or just top it up yourself at regular intervals.
 
teulk said:
Let me get this right, stick a tube on the bleed nipple, attach a syringe, open bleed nipple and then draw back syringe to "suck out" the fluid. How easy is that, i guess you still have to have someone filling up the reservoir.......or just top it up yourself at regular intervals.
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Spot on, and yes you still need to keep an eye on the fluid level, but that goes for any method. The good thing is that the volume of the syringe is less than the volume of the reservoir in all cases I've come across. So, you'd have to be a real numpty to drain your res dry ;)


I forgot the first bit too, use the syringe to remove most of the old fluid from the reservoir before you start bleeding. This way you don't have to bleed all the old fluid out of the res too.

Fog
 
Dogbreath said:
I'be used an eezibleed numerous times at home before and they work perfectly as long as the cap stays tight on the master cylinder. However they can alegedly cause problems with ABS equiped vehicles.
Click to expand...

Strangely enough, Ive went through 3 ABS pumps and ive always used an eezibleed.
 
I built my own vacuum bleeder, the problem was when using it, air was introduced into the silicone line from the threads on the bleed nipples. Obviously it wasnt getting back into the system as it was under vacuum but you were unable to tell if the fluid coming through the line had any air in it or not.
 
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