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brake pedal hits the floor.

Chassis/Brakes/Steering/Wheels discussion
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Thebusofwoe
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Post by Thebusofwoe » Sun Apr 20, 2014 12:04 am

If you don't fancy that, keep bleeding the rears whilst tapping them with a hammer, sometimes that encourages the air up and out. ;)
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Bludge
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Post by Bludge » Sun Apr 20, 2014 12:21 am

hammer is gonna be the way, couldnt get the pin for the handbrake cable off the calipers on the lude i broke, figure mine will be the same.

im bleeding the rears with the back end of the car in the air, will that make a difference?

I did way more then 15 pumps on that front one with the bubbles on the second bleed.

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Bludge
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Post by Bludge » Sun Apr 20, 2014 12:29 am

Another point to put forward, i bought this today:
http://www.pagid.com/en/products-mainme ... -538771321

And when i used it it was sucking in loads of air from somewhere. the tube round the nipple seemed tight, and i just thought maybe the copper washers on the banjo bolts are letting air in?

If that was the case though wouldnt fluid be leaking and pressure be lost when the brakes are held down?

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Thebusofwoe
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Post by Thebusofwoe » Sun Apr 20, 2014 9:08 am

Those tend to suck in air pal, that i wouldn't worry about tbh. You would get fluid coming out before air going in if there was a leak. Think ur just gna have to keep bleeding and tapping :?
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Post by Bludge » Sun Apr 20, 2014 10:34 am

ok thanks mate, hooefully have then sorted before japfest!

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Ted
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Post by Ted » Sun Apr 20, 2014 10:51 am

Id say your sucking in air on a joint somewhere. Take them off make sure there is no dirt/grit where it should seal and try again. Start with the caliper your getting bubbles in and see if that solves it.

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Post by Bludge » Sun Apr 20, 2014 12:06 pm

this is a good shout ted, and i will give it a go.

Although im sure i had the same problem with the same caliper on my last bleed which was before changing the hoses. so if its not line to hose connector or hose to caliper bolt, where else should i be looking?

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Post by Bludge » Tue Apr 22, 2014 3:15 pm

Thebusofwoe wrote:Tbh it sounds like air in the system. There is a way you can almost guarantee this, drive along at say 15 or so mph. Hit the brake pedal, release and hit it again. But do it quick. If the second time you hit the pedal it feels further up and harder then there is air in there somewhere ;)
tried this a few times now and the pressure point is the same, no variation.

after reading through thr manual im wondering if my brake booster pushrod clearance needs adjusting? or brake pedal adjustment? or something along those lines?

*EDIT* Pedal freeplay seems within specification. the pedal doesnt touch the floor but it knocks at the bottom when the travel stops, but not sure what is stopping it. dont know if that changes anything at all? uploading a video to post in a bit so hopefully you can see what i mean.

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Post by Bludge » Tue Apr 22, 2014 7:47 pm

[youtube]jY1a6c5A5sE[/youtube]

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