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  #1  
Old 23-03-2010, 22:59
conor6789 conor6789 is offline
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Brakes wont bleed vfr800 1999

Hello, new to this forum.
I was trying to bleed my VFR800 1999.
I blead the front right caliper outter nipple and it blead fine.
I blead the front left caliper outer nipple and it blead fine.
I blead the front right caliper center nipple and it blead fine.
I blead the front left caliper center nipple and it blead fine.
I tried to bleed the PCV nipple but no air or fluid would come out.
I tried to bleed the rear caliper center nipple but no fluid or air would come out.
I blead the rear caliper outter nipple and it blead fine.

Any ideas why it wont bleed, I'm thinking there might be a blockage in the line.
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Old 25-03-2010, 20:25
Stu1969 Stu1969 is offline
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I did mine for the first time last year and although complicated, not the mare I expected. I would not do it again without a vacuum bleeding kit (which I have now made).
I had to suck fluid through to the rear calliper, (I canít remember which nipple). That might be worth a try. Remember not to drink the brake fluid, itís not good for you.
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Old 25-03-2010, 21:48
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skipjack skipjack is offline
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I think the only way to bleed the nipples you are on about is either by vacumm or by working the front lefthand side cylinder that pushes up against the left front fork
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Old 25-03-2010, 22:35
robpal robpal is offline
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Ok i had trouble with my brakes, and was pointed to this no nonsense guide by beast (thanks beast)

http://www.bikersoracle.com/vfr/foru...ead.php?t=1523

TIP all the guides will tell you to pump the brake then hold and open the valve, i couldn't get anything out, so put a tube from the bleed nipples into a jar of fluid and using a helper open the valve slightly and gibe the brakes a good pump

As long as the end of the tube is under the brake fluid you'll suck no air in. I tried for 2 days to get the air out and my dad whos bled all his cars and bikes came up and pumped the brakes with the nipple open and loads and loads of air came out hey presto good firm brakes.

also check the rear master cyclinder you can reach it if you take the seat off, when i took my cap off the rubber diaphram had sucked right in and lined the cylinder, all the fluid had gone, i'd filled it up with brake fluid and wondered why is wasn't going through (quiet at the back)
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Old 26-03-2010, 15:25
conor6789 conor6789 is offline
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I'm using a vaccum hand pump bleeder and no air or fulid will come from the pcv or rear caliper center nipple. I suppose there must be a blockage.
Thanks for your help.
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Old 26-03-2010, 18:59
robpal robpal is offline
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Have you got fluid in the REAR master cylider, have you tried pumping the rear brake whilst open the bleed valves?
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Old 26-03-2010, 21:33
conor6789 conor6789 is offline
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Yes I connected the bleeder to the nipple and built up a strong vaccum, with the strong vaccum connected to the nipple i pumped the pedal and pumped the secondry master cylinder, still no air or fluid would come.

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Old 27-03-2010, 10:07
VFRonica VFRonica is offline
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A long shot, but is the bike on its original lines? I replaced mine (FiX) last year and found a load of crud behind the rear caliper centre piston when servicing it. Also, are you removing the front left caliper and ensuring that the bleed nipples are uppermost when bleeding the PCV and rear caliper? And - have you removed the rear caliper and inverted it on the disc prior to bleeding? These two calipers must be placed differently to ensure a successful bleed/fluid replacement.
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Old 27-03-2010, 14:03
conor6789 conor6789 is offline
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Yes the bike uses it's original lines, I think I'll have to bring the bike to the bike shop. Thanks for your help anyway.
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Old 29-03-2010, 20:06
VFRonica VFRonica is offline
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If you're anywhere near Northamptonshire, you can bring the bike over to me and we'll sort it out between us?
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Old 29-03-2010, 20:39
conor6789 conor6789 is offline
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I'm actually in Ireland.
Thanks anyway.
Conor.
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Old 30-03-2010, 05:24
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soggyblade soggyblade is offline
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conor i am in ireland too , am working in dublin, if you are nearby let me know can meet up give you a hand. ok
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Old 30-03-2010, 13:06
conor6789 conor6789 is offline
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I'm in Mitchelstown Co. Cork.
Thanks for your offer but I think I'll leave to the bike shop.
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