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brake fluid leak between booster and brake master


seizer
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Galant VR-4 org Post #: 952009 posted 11/23/10 01:45 PM     Remind Me!  Send Private Message   Edit Post      
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About a week ago my check brake light came on so i added some fluid because it was low and called it a day and brakes were fine and there was no more light. So the next morning i start the car for work light comes back on this time there is fluid under the car that to the naked eye appears to be leaking where the brake booster and brake master meet. I have left the car for about a week sitting. I have since topped the fluid off and tried pumping the brakes to see if i can see where the fliud is coming from and results are the same but this time my brake pedal is stiff. I have a repair manual for the car and understand how to disassemble the brake booster and brake master cylinder and put it back together. My question is why is there fluid leaking from that area and what most likely will need replaced, or what process should i take to get a better idea of what is going on?

My guess is that the master cylinder is bad...
Any help would be appreciated thanks in advance!


Edited by seizer (11/23/10 01:56 PM)

Posts: 151 | From: Colorado Springs | Member Since: 07/29/08 | IP: (75.70.217.53) | Report this post to a Moderator

boostedinaz
Fatty McButterpants
1101/2000


Galant VR-4 org Post #: 952071 posted 11/23/10 04:30 PM     Remind Me!  Send Private Message   Edit Post      
I'm going to say it's leaking. I had the same thing happen to my clutch master in my old Talon and it looked the same.

One thing to make look at just in case is the seal/plastic fitting and that rubber line. If they are cracked they could make the leak ppear to be the master. My bet it still on the master though.



Michael
The rebuild of 1101

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Terry Posten
Old Balls
425/1000


Galant VR-4 org Post #: 952077 posted 11/23/10 04:43 PM     Remind Me!  Send Private Message   Edit Post      
Easy fix and forces you to flush the brake fluid.

Should take about 2 hours to do properly taking your time.

Buy high quality full synthetic brake fluid and she will be good to go for a few more years.

The black paint on the brake booster will probably be eaten off. Clean it very well and respray to keep rust away before you re-seat the new master cylinder.

If you remove the large rubber vac line to the booster, be careful. It is not just a rubber hose. It has a valve inside that MUST be installed the same way as you took it off. Otherwise your brakes will feel crappy and it will be very dangerous. If it is cracking, get a new one from www.JNZtuning.com. They are not that expensive.



1992 Galant VR4 click
2010 Outlander GT S-AWC Premium w/nav (wife daily)
2010 Jaguar XF Premium Luxury (my daily

Posts: 9009 | From: Davenport, Iowa USA | Member Since: 12/16/03 | IP: (173.26.17.192) | Report this post to a Moderator

seizer
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Galant VR-4 org Post #: 952217 posted 11/24/10 12:01 AM     Remind Me!  Send Private Message   Edit Post   
Sounds like a straight forward job! Thanks for the pointers guys. I will try to tackle this task after the holiday and post back if I have any problems.

Posts: 151 | From: Colorado Springs | Member Since: 07/29/08 | IP: (74.82.68.18) | Report this post to a Moderator


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