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[V6 CDX-er]

Firstly, sorry for what may seem like a stupid question chaps.

A bit of background. I had a seized rear caliper, (off side), which I've replaced. During which, because I had sprained the flange nut without realising, I ended up loosing most of my brake fluid.

I had a mate come round the other day to help bleeding the brakes using the old two-man method. After a couple of hours we still hadn't managed to bleed even the first caliper, (near side rear). I had the jar end of the tube submerged in brake fluid so as not to suck any air back into the system, and he kept his foot on the brake untill I had shut the bleed nipple on the caliper.

He would pump and hold, I'd open the nipple and some fluid would come out followed by loads of air bubbles. Then the pressure would drop, requiring me to close the nipple and him to pump again. As I said, this went on for a couple of hours untill late into the night. At that point we called it a day, and I bought a Gunson's Ezzi-bleed the next day.

So, here's my question.....

When I'm using the Ezzi-bleed and I open the bleed nipples, (so far done near side rear and off side front), I'm not seeing any air bubble escape from the tube attached to the bleed nipple. I'd have thought that the brake fluid being injected under pressure would force the air out of each caliper once the bleed nipple was opened, therefore making it clearly visible through the bleed tube attached to the caliper?

One thing of note is that the clear plastic tube attached to the cap that fits onto the master cylinder does leak fluid ever so slightly. Surely it cant be likely that any air in the system is being purged at this point?

Or is what's happening perfectly normal?



Just one quick word of warning though chaps. The first time I attached the Ezzi-bleed and pressured up the system, I ended up with a huge spurt of brake fluid exiting the tube that goes from the bottle to the master cylinder. This was caused by a tiny split in the clear plastic pipe. I took it back to Halfords and we looked at all the other eight items that they had in stock and all eight had the same defect. The hole / split was so small that you could hardly see it with your eyes, but you could feel it by running the edge of your finger nail along the pipe. Problem was solved by pulling the pipe off and cutting a little bit away.



In advance, cheers   

[Broomies Mate]

Make sure you are not using a fully inflated tyre.  Max 15PSI I believe with these kits?
 

[V6 CDX-er]

Make sure you are not using a fully inflated tyre.  Max 15PSI I believe with these kits?
 

I'm using a space saver placed on top of the engine. Running it about 16-17psi as checked on one of those digital pressure gauges.

[andyc]

I've converted my ezzi bleed so i can use it from the compressor and have the air regulator turned right dow to a couple of PSI.

This means i don't have fluid pi**ing all over the paint work and i can take my time on each wheel. Done this yesterday on the Nova Redtop I'm building

Andy

[Marks DTM Calib]

I never use the res tanks with fluid in that come with the kit. I simply fill the brake fluid reservoir between each corner and use the kit to do nothing more than pressurise the system

[Kevin Wood]

I never use the res tanks with fluid in that come with the kit. I simply fill the brake fluid reservoir between each corner and use the kit to do nothing more than pressurise the system

Me too. Saves having brake fluid leaking everywhere.

Kevin

[Bent valve]

I havent used an eazy bleed in years, but I seem to recall that they used a pipe with a bung in one end and a small split in the pipe that acted like a one way valve in that it opened up to eject fluid under pressure, but then closed up to prevent air getting in when the pedal was released?
Is it possible you are using the wrong pipe on the master cylinder end?

[ballcock50]

If used correctly you should not have brake fluid going anywhere you don't want it to.

[Kevin Wood]

If used correctly you should not have brake fluid going anywhere you don't want it to.

Depends how good the seals are. "Not very" once they've been used a couple of times, in my experience.

Kevin

[Bent valve]

If used correctly you should not have brake fluid going anywhere you don't want it to.

Depends how good the seals are. "Not very" once they've been used a couple of times, in my experience.

Kevin

He's just bought it new apparently, unless he got it from a car boot sale

[VXL V6]

I havent used an eazy bleed in years, but I seem to recall that they used a pipe with a bung in one end and a small split in the pipe that acted like a one way valve in that it opened up to eject fluid under pressure, but then closed up to prevent air getting in when the pedal was released?
Is it possible you are using the wrong pipe on the master cylinder end?

Easibleed works by pressurising the system. No need to depress the brake pedal.

[ballcock50]

Yes the one I presently use is fairly new, I used to use my neighbours which has been well used but still didn't leak if used at the lower pressure, If the seals leak then replace them.

[Andy B]

I havent used an eazy bleed in years, but I seem to recall that they used a pipe with a bung in one end and a small split in the pipe that acted like a one way valve in that it opened up to eject fluid under pressure, but then closed up to prevent air getting in when the pedal was released?
Is it possible you are using the wrong pipe on the master cylinder end?

That's not an Eazi-bleed. You're describing a very basic one man bleeding kit. 

[V6 CDX-er]

If used correctly you should not have brake fluid going anywhere you don't want it to.

Fluid leak only occuring because of a split in the pipe, (now fixed), but this is now not a tight fit, so there is a little seepage.

What I'm more concerned about is the fact that despite there being plenty of air in the system, I don't seem to be getting any air bubbles coming out of the calipers when I'm bleeding the brakes.

[Broomies Mate]

If used correctly you should not have brake fluid going anywhere you don't want it to.

Fluid leak only occuring because of a split in the pipe, (now fixed), but this is now not a tight fit, so there is a little seepage.

What I'm more concerned about is the fact that despite there being plenty of air in the system, I don't seem to be getting any air bubbles coming out of the calipers when I'm bleeding the brakes.

Is fluid coming out of the nipple?  If so, then you can be quite sure there is no air in the line.  No bubbles = no air.