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brake problem


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buck123
User

Mar 29, 2011, 1:41 PM

Post #1 of 7 (1549 views)
brake problem Sign In

I had a hole in a brake line so had brake line replaced.A week later pedal getting spongy so I bleed all wheels starting from the farthest from the master cylinder to the closest.the only wheel that had air was the drivers side rear.I had great brake pedal for 3 days and now spongy pedal again.I again have air in the same wheel drivers side rear.I don't notice any decrease in fluid in the master cylinder.If there is it is very slight and not noticable.the rear wheel cylinder in the wheel with air in it is bone dry behind duster caps.only air in the one rear wheel.Some mechanic told me probably master cylinder.I was thinking about using a uv dye if they make it for brake fluid.any ideas?thanks in advance.


steve01832
Veteran
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Mar 31, 2011, 5:08 PM

Post #2 of 7 (1530 views)
Re: brake problem Sign In

Sounds to me like the master cylinder has an internal leak and is pushing air into the system. Your best bet is to replace it. Make sure you bench bleed the new one before you connect the lines or you will have to bleed all 4 wheels again.

Steve


Tom Greenleaf
Ultimate Carjunky / Moderator
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Mar 31, 2011, 5:21 PM

Post #3 of 7 (1528 views)
Re: brake problem Sign In

Off the topic - Steve! Great to see you here. Site has grown quite a bit since we started now so long ago.

Back to the problem - I think it's a master cylinder too,

Tom



steve01832
Veteran
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Mar 31, 2011, 5:27 PM

Post #4 of 7 (1524 views)
Re: brake problem Sign In

Hi Tom. I've been so busy I can't find time any more to come here and be productive. I'm here tonite but may be another year until I'm heard from. lol

Steve


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Mar 31, 2011, 5:35 PM

Post #5 of 7 (1521 views)
Re: brake problem Sign In

Fully understood that people have other things to do and get busy. It can also get old doing this stuff which is fine too and expected that some tech come and go. I'm still here because this is rest for me as what I should be doing is hard work - laugh,

Tom



Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 31, 2011, 5:36 PM

Post #6 of 7 (1514 views)
Re: brake problem Sign In

Nice to hear from you Steve..........



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



buck123
User

Apr 3, 2011, 3:17 PM

Post #7 of 7 (1483 views)
Re: brake problem Sign In

Hey its an office party!!!!!!!!!!!!!!!!!!!!! garage replaced brake lines.Since I had air in only drivers side rear wheel whenever I bleed 2nd time I turned bleeder screw a little extra thinking when garage bled they didn't tighten all the way or there was air in the proportioning valve.I have good brake for 7 days now since I last bled them.Thanks guys.






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