MKIV, Golf: Hard Coolant Pipe Leak

KrashDH

Top Post Dawg
Joined
Dec 22, 2013
Location
Washington
TDI
2002 Golf
Hey all,

So this weekend I tackled the notorious leaky connection at hard pipe and block behind the water pump.

I can honestly say, just like the majority that have done this...it's a royal PITA!

I followed this thread which really helped out a lot.

Note that I didn't remove the pipe completely as I don't have corrosion on it:

http://forums.tdiclub.com/showpost.php?p=3604915&postcount=8

Here's a couple of photos from the job:

The area that you're trying to get too:



Mine came out with a little persuasion, but it wasn't bad since there wasn't rust. Just some twisting and pulling:



Here's the end that gets stuffed into the block. I took a stainless steel brush to that end as well as the interface at the block to clean it up:



Think the o-ring is bad??:D



Anyway, it wasn't a bad job. Really the biggest issues I fought were the connectors.

I suppose draining the coolant and taking off the lines made kind of a mess, but I've made worse messes. This is my 3rd fully coolant drain and fill this summer. It's not supposed to be like that, but when it rains, it pours... (Replaced T-stat and housing due to a leak, waterpump then started leaking so it warranted a timing belt change, then this project).
 

mr.loops

Veteran Member
Joined
Nov 24, 2010
Location
Kelowna
TDI
2002 jetta, 2003 Bora 1.8T
I had to do this on my 1.8T this summer and it involved removing a lot of parts and time to get at the little bugger.

Nice work [emoji106]


Sent from my iPhone using Tapatalk
 

BakoTDI

Veteran Member
Joined
May 5, 2005
Location
Bakersfield, CA
TDI
Jetta, MK7
Just make sure you use the right o-ring depending on your car. There are two different ones:
Early A4
Late A4
 
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