www.tdiclub.com

Economy - Longevity - Performance
The #1 Source of TDI Information on the Web!
Forums Articles Links Meets
Orders TDI Club Cards TDIFest 2016 Gone, but not forgotten VAG-Com List Unit Conversions TDIClub Chat Thank You

Order your TDIClub merchandise and help support TDIClub


Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW MKIV-A4 TDIs (VE and PD)

VW MKIV-A4 TDIs (VE and PD) This is a general discussion about A4/MkIV Jetta (99.5-~2005), Golf(99.5-2006), and New Beetle(98-2006). Both VE and PD engines are covered here.

Reply
 
Thread Tools
Old November 6th, 2019, 08:29   #1
vwdsmguy
Veteran Member
 
Join Date: Jul 2004
Location: Syracuse, NY
Fuel Economy: 49/46/42
Default leaking master cylinder

My fluid diapppears till I get a soft pedal a few months later after being full. Has anyone found it leaked into the booster in the back end of the cylinder? I could just add fluid every few months, 1/2 cup or so, but I need a real fix. I can't find evidence of any obvious leaks elsewhere. Also, sometimes when cold I get a trail of bluish smoke on my first long down hill. It looks like a PITA to change the master, so I have been putting it off. Also, is there a test positive for this leak issue?
__________________
'02 Golf TDI, RC5, PP764's, FMIC, 2.5" T-Back, OMI, SB-3 clutch, 11mm pump, VNT17/22, 3 Bar MAP, CAT filter, 90 GPH Holley lift pump, modded D24 intake manifold, Rosten rods, Nural pistons, ported head - 15.0 @ 94 at the drags

Last edited by vwdsmguy; November 6th, 2019 at 13:54.
vwdsmguy is offline   Reply With Quote
Old November 15th, 2019, 08:58   #2
vwdsmguy
Veteran Member
 
Join Date: Jul 2004
Location: Syracuse, NY
Fuel Economy: 49/46/42
Default leaking brake fluid

I might not have a brake issue. It could be in the clutch hydraulics because I have something leaking on the drivers side of the under engine pan, however the clutch pedal action feels normal. Both clutch and brake masters feed from the same reservior. i can't believe the cost of the clutch hydraulic line [$133], so I hope it's not that.
__________________
'02 Golf TDI, RC5, PP764's, FMIC, 2.5" T-Back, OMI, SB-3 clutch, 11mm pump, VNT17/22, 3 Bar MAP, CAT filter, 90 GPH Holley lift pump, modded D24 intake manifold, Rosten rods, Nural pistons, ported head - 15.0 @ 94 at the drags
vwdsmguy is offline   Reply With Quote
Old November 15th, 2019, 22:20   #3
KLXD
Veteran Member
 
Join Date: Aug 2009
Location: Lompoc, CA
Default

It can leak into the booster.

Brake fluid is water soluble, is the fluid you see leaking? Time to remove the pan and do some looking. Could have a small leak that doesn't affect funcfuncfunction.
__________________
Saying no to gas for 25 years:

Current: 02 Jetta, Auto; 98 Jetta, 5 Spd; 98 Dodge, 5 Spd, SB, 4x4; 84 Grand Wagoneer with Nissan SD33T, NV4500, Dana 300, Reverse Cut Dana 44, Dana 60

The Black Sheep (Only gasser): 85 CJ, 4.2 w/4.0 Head and Mopar FI.

Past: 85 Mitsubishi PU, 4D55T; 81 Rabbit, 1.6; 80 Dasher, 1.5; 79 Rabbit, 1.5
KLXD is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Leaking Clutch master cylinder??? Asbury030 VW MKIV-A4 TDIs (VE and PD) 3 November 8th, 2018 06:52
2006 Not Starting and Leaking Brake Master Cylinder upchurch17 VW MKV-A5 Golf/Jettas 4 February 3rd, 2016 16:07
Brake master cylinder/clutch master cylinder? dweisel VW MKIII-A3/B4 TDIs 16 July 2nd, 2015 20:09
Clutch master cylinder or Slave cylinder, Which is FAIL ? Mcgink VW MKIII-A3/B4 TDIs 22 November 26th, 2014 14:34
Urgent clutch master cylinder leaking srmichi TDI 101 9 June 21st, 2011 15:56


All times are GMT -7. The time now is 11:49.


Powered by vBulletin® Version 3.8.5
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright - TDIClub Online LTD - 2017
Contact Us | Privacy Statement | Forum Rules | Disclaimer
TDIClub Online Ltd (TDIClub.com) is not affiliated with the VWoA or VWAG and is supported by contributions from viewers like you.
1996 - 2017, All Rights Reserved
Page generated in 0.14997 seconds with 13 queries
[Output: 58.75 Kb. compressed to 53.22 Kb. by saving 5.53 Kb. (9.41%)]