[Vwdiesel] Leaky Plastic Water Outlet at Head on 91 Ecodiesel.

mark shepherd mark at shepher.fsnet.co.uk
Thu Apr 16 11:51:20 PDT 2009

On the almost perfect GTD I seem to have been given, low mileage etc, there 
was a leak from that plastic flange... turned out to be corrosion on the 
head from stud to waterway. Stopped leak with unneccessarily purchased new 
flange and actually by new 'o' ring and joint sealer.
I drive it once a month to keep the bugs off, but that's  it.


  ----- Original Message ----- 
From: "Will Taygan" <william at taygan.com>
To: <vwdiesel at vwfans.com>
Sent: Thursday, April 16, 2009 6:42 PM
Subject: [Vwdiesel] Leaky Plastic Water Outlet at Head on 91 Ecodiesel.

> I've been fighting coolant leaks for the past couple months.  Finally
> tracked it down to the coolant outlets on the front of the head on BOTH
> Jettas.  The 94 1.6TD conversion has the metal outlet, it turned out to
> be a bad fit on the bypass hose (pulled the hose, put it back on, all
> good.)
> The 91 1.6 Ecodiesel has the plastic outlet and the new, bigger sensors.
> I replaced the o-ring and what was a little leak is now a big leak.
> I've got a new plastic fitting to put on, but before I do I thought I'd
> check to see if there's anything I'm missing, especially since the first
> attempt didn't go so well.
> I'm planning on pulling the fitting, scraping the head a little, putting
> the new one + o-ring on and tightening it back up.  Do I need sealant on
> the bolt threads? Anthing on the o-ring??? Bentley doesn't say anything
> but torque to 10nm.
> Thanks,
> Will.
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