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-   -   Help. Trying to bleed. No fluid coming out. (http://forums.pelicanparts.com/porsche-911-technical-forum/957091-help-trying-bleed-no-fluid-coming-out.html)

sugarwood 05-17-2017 06:47 PM

Help. Trying to bleed. No fluid coming out.
 
No idea what is wrong.

Open bleed screw.
Helper pumps.
Nothing comes out.

autojack 05-17-2017 06:51 PM

Clutch? Brakes? Headlights?

Bob Kontak 05-17-2017 06:56 PM

Quote:

Originally Posted by autojack (Post 9591607)
Clutch? Brakes? Headlights?

Nice one! Left handed headlight bleeders.:D

Brakes.

Last year you said you turned the bleeders 1/8 of a turn. Try a 3/8 of a turn.

sugarwood 05-17-2017 07:05 PM

Bob is the man. As always.

I was opening it, and helper said pedal was down. But I wasn't opening it enough. Why was pedal going down then?

Bob Kontak 05-17-2017 07:21 PM

Quote:

Originally Posted by sugarwood (Post 9591624)
Bob is the man. As always.

I was opening it, and helper said pedal was down. But I wasn't opening it enough. Why was pedal going down then?

Stay the course. Start over.

Explain what down means. Put that block of wood in there. Set a cadence. "Up" "OK" "Down" "OK" Pedal pumper does nothing without your instructions.

You do not have a problem. You have a familiarity issue.

Please watch the stream as I suggested. I will bet you get a couple of wee burp smidgeons of air.

Make a mess.

sugarwood 05-17-2017 08:21 PM

The issue was the brake pedal was going down, yet nothing was coming out.
This really confused me.

Anyways, once I opened the bleed screw more, fluid came out.

All done!
Did 10 pumps in the rear, and 5 up front.

I didn't use much fluid at all.
Maybe 1/4 of the liter.

Plays with cars 05-17-2017 10:43 PM

The brake pedal should not be going down without a bleeder valve being open. This warrants further investigation if that is happening. After bleeding you should have a firm pedal that doesn't go down. If its firm, but going down, then you have a leak somewhere. If the pedal is soft (squishy, not firm) and can be pushed down, then you have air in system (a lot if you are able to move the pedal a substantial amount).

Rawknees'Turbo 05-18-2017 12:04 AM

Quote:

Originally Posted by sugarwood (Post 9591724)
The issue was the brake pedal was going down, yet nothing was coming out.
This really confused me.


Anyways, once I opened the bleed screw more, fluid came out.

All done!
Did 10 pumps in the rear, and 5 up front.

I didn't use much fluid at all.
Maybe 1/4 of the liter.

Wood, you had the bleed screw open enough to relieve pressure at the pedal/master cylinder, but not enough for fluid to come out (it would have come out eventually - such as if you left the bleed screw open to that amount and came back to the car a little while later - you would have seen weeping at the bleeder.

If the pedal can actually be depressed when the bleed screws are completely seated, and there are no external leaks or any air in the system, then the master cylinder piston seals are leaking internally and letting fluid past the piston (pedal pressure loss).

sugarwood 05-18-2017 03:44 AM

Yes, that was it. Thanks.
Once I opened it more, the fluid flowed freely.

Once we were done, the pedal was again hard as a rock with the bleeders closed.

1979-930 05-18-2017 06:46 AM

Quote:

Originally Posted by sugarwood (Post 9591879)
Thanks.
Once we were done... again hard as a rock.

2nd round rally, Blue Pills??

Rawknees'Turbo 05-18-2017 08:47 AM

Quote:

Originally Posted by 1979-930 (Post 9592005)
2nd round rally, Blue Pills??

Bob K downs those by the fistful, and puts them on doughnuts like sprinkles! :eek:

Bob Kontak 05-18-2017 09:01 AM

Quote:

Originally Posted by Rawknees'Turbo (Post 9592161)
Bob K downs those by the fistful, and puts them on doughnuts like sprinkles! :eek:

sugarwood sings:

If you're havin' girl problems, I feel bad for you son
I got 99 problems and my brakes ain't one.

http://forums.pelicanparts.com/uploa...1495123275.jpg

https://www.youtube.com/watch?v=j1ZObiu6kRU

Rawknees'Turbo 05-18-2017 09:12 AM

^^^

Ha ha - awesome! :D

juanbenae 05-18-2017 09:30 AM

speed bleeders

1979-930 05-18-2017 09:43 AM

^^^
I have those. But Rawknee showed me the way. (Not that way ya pervs)
20Psi Pressure Bleeder Tool. :D

http://forums.pelicanparts.com/uploa...1495125788.jpg

Just make sure the cap is back on before applying the pressure... ;)

flat6pilot 05-18-2017 09:50 AM

bleed
 
http://forums.pelicanparts.com/uploa...1495126208.jpg

GaryR 05-18-2017 12:24 PM

Quote:

Originally Posted by 1979-930 (Post 9592262)
^^^
I have those. But Rawknee showed me the way. (Not that way ya pervs)
20Psi Pressure Bleeder Tool. :D

http://forums.pelicanparts.com/uploa...1495125788.jpg

Just make sure the cap is back on before applying the pressure... ;)

I like it! Set pressure regulator to 20PSI and go! Just keep an eye on the fluid level and be sure to drain the pressure before removing the cap! :D

sugarwood 05-18-2017 01:03 PM

Quote:

Originally Posted by Bob Kontak (Post 9592190)
sugarwood sings:
If you're havin' girl problems, I feel bad for you son
I got 99 problems and my brakes ain't one.

https://i.ytimg.com/vi/8IB15T1LYiY/hqdefault.jpg

Bob Kontak 05-18-2017 02:05 PM

Quote:

Originally Posted by sugarwood (Post 9592539)

I watched that vid. Never picked up on it.

autojack 05-19-2017 07:21 AM

Here's one thing I don't understand: the brake fluid reservoir has some air in it above the max fill level, and it also has a vent hose which you need to clamp before you can pressure-bleed the system. So how come, in normal operation, pushing the brake pedal doesn't just raise the fluid level in the reservoir, even to the point of pushing it out the vent tube?

I just bled my brakes for the first time after replacing my brake light switches. The pedal feels firmer, but I think it's still squishy. Maybe I need to think about the matter cylinder seals...


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