[TR] TR4A - Coolant at top of Cylinder Head

Andrew Uprichard auprichard at uprichard.net
Sat Oct 26 15:47:14 MDT 2013

I'd replace the plug itself before doing anything more invasive.  They do
tend to rot.  Plus - change your oil as you are likely to have coolant in

Andrew Uprichard

-----Original Message-----
From: triumphs-bounces at autox.team.net
[mailto:triumphs-bounces at autox.team.net] On Behalf Of G.D. Huggins
Sent: Saturday, October 26, 2013 4:05 PM
To: triumphs at autox.team.net
Subject: [TR] TR4A - Coolant at top of Cylinder Head


Well... the day has come and I believe I may have my first engine defect.

Yesterday I removed the valve cover to discover "goo" surrounding the plug
in the top of the head, inside the valve train area.
I wiped it clean and waited.

Today I looked, and sure enough, greenish coolant is leaking from around the
plug. (I'm curious as to what is providing the pressure to force it up
through the seam.) Dong some quick research I see the most plausible culprit
is the head gasket leaking between cylinders 2 &3.

Does anyone have any thoughts, experience or advice you could share?

I'd love to be wrong, but at this point I think I'm looking at pulling the
head and replacing the gasket.
If I do this, how can avoid this in the future?  Is there some technique I
should be using?


Guy D. Huggins
1965 Triumph TR4A
CTC 63569LO

Online project diary at http://www.genfiniti.com/triumph

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