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Brake Bleeding

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ksdst1
Posts: 149
Joined: 29 Nov 2006, 14:09
Year and Model: 1996 Volvo 850 GLT
Location: Pittsburgh, Pa

Post by ksdst1 »

Hi all. I am bleeding my brakes after replacing back calipers, rotors, pads, etc. The back calipers and front driver's side all bleed with a constant stream w/ no air spurts when the bake petal is pressed. However, the front passenger side only has a solid dribble stream. No air spurts but it seems as though the pressure is low. The brake pedal seems stiff when not bleeding so there seems to be pressure there. I didn't touch these front calipers with my current brake work. BTW. Front pads and rotors (not calipers) were changed by a mechanic about 8 months ago.

Any ideas on what may be causing this low pressure? Clogged line? Is there a way to troubleshoot? Not sure what to do with this one. The car is still on front jacks for bleeding and I haven't taken it for a test drive since this and the back brake work.
Tnx..
Volvo 850 GLT 1996 Auto

MNCO1
Posts: 172
Joined: 22 Feb 2009, 18:30
Year and Model: 850 T-5 1997
Location: colorado springs

Post by MNCO1 »

Clogged/ dirty bleeder screw? Could try poking something small into the opening

raint5
Posts: 36
Joined: 26 Mar 2010, 11:28
Year and Model: 1996 850 t5
Location: mcminnville oregon

Post by raint5 »

you would think that if the bleeder valve was dirty that there would be enough pressure to blow that junk out though right?
soon to come, mbc; boost, afr and oil press. gauges

ksdst1
Posts: 149
Joined: 29 Nov 2006, 14:09
Year and Model: 1996 Volvo 850 GLT
Location: Pittsburgh, Pa

Post by ksdst1 »

I had a look at the bleeder screw and it appears to be OK. There just doesnt seem to be the same amount of pressure to this caliper. I haven't work breaks enough to know what it means. Maybe a clogged line? I worried if or how it will affect braking.
Volvo 850 GLT 1996 Auto

raint5
Posts: 36
Joined: 26 Mar 2010, 11:28
Year and Model: 1996 850 t5
Location: mcminnville oregon

Post by raint5 »

maybe check the line all the way from the master cylinder to the caliper and see if it got crushed or pinched somehow? thats really wierd, the other thing that you could check is the rubber hose to see if it has cracked or anything, when i bought my volvo those rubber hoses were in need of replacement
soon to come, mbc; boost, afr and oil press. gauges

charlyW
Posts: 1008
Joined: 21 Jul 2009, 10:33
Year and Model: 97 855 T-5 CD
Location: Norwich, UK

Post by charlyW »

remove the screw to see if it has corrosion blocking the port then replace it, then bleed it or maybe you didnt open the bleed screw enough give it a good 1/4 turn to open
855 T-5 RHD Blue: MBC, Custom Map based on Rica, K&N Filter, 18T Turbocharger, White/Green injectors [depends on my mood], Blue Silicone vacuum hoses

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