Subject: Re: [Healeys] Glycol in oil (David Lodge)

From: Wayne Schultz via Healeys <[email-masked]>
Date: Fri, 17 Nov 2023 21:13:01 -0500

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My path to locate the leak is to pressurize the cooling system to about
        14 PSI (1 BAR) and see if it leaks down. I use a cooling system
pressure tester for this. I then use a small endoscope inspection camera to
inspect all of the bores with the plugs removed looking for coolant leaking
into the cylinders. You might not see coolant  in the cylinder ,but if one
piston is very clean compared to others that is suspect. If that is
inconclusive I then drop the oil pan looking for coolant drips into the oil
pan area. The last hard to find leak was behind the middle tappet cover.
The raised boss in the block  was porius and only leaked into the oil pan
area when the engine was cold.  When the engine was hot and expanded there
was no leak. The next day when cold it would drip several  drips per hour.
Both of these inspections are less invasive than pulling the head, which is
my final inspection looking for the source. good luck.

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<div dir=3D"ltr">My path to locate the leak is to pressurize the cooling sy=
stem to about=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 14 PSI (1 BAR) and s=
ee if it leaks down. I use a cooling system pressure tester for this. I the=
n use a small endoscope inspection camera to inspect all of the bores with =
the plugs removed looking for coolant leaking into the cylinders. You might=
 not see coolant=C2=A0 in the cylinder ,but if one piston is very clean com=
pared to others that is suspect. If that is inconclusive I then drop the oi=
l pan looking for coolant drips into the oil pan area. The last hard to fin=
d leak was behind the middle tappet cover. The raised boss in the block=C2=
=A0 was porius and only leaked into the oil pan area when the engine was co=
ld.=C2=A0 When the engine was hot and expanded there was no leak. The next =
day when cold it would drip several=C2=A0 drips per hour. Both of these ins=
pections are less invasive than pulling the head, which is my final inspect=
ion looking for the source. good luck.</div>

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From: Michael Salter <[email-masked]>
Date: Sat, 18 Nov 2023 00:06:05 -0500

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Very interesting Wayne, I  test for a head gasket leak opposite way.
Remove the radiator cap and fill the radiator (preferably with water only
to prevent antifreeze spilling everywhere).
Remove the rocker shaft (usually easier than trying to back off the tappet
adjusters) then install an adaptor a spark plug hole and attach an air line
(120 p.s.i.) to the adaptor. When the air pressure is applied to the
offending cylinder the radiator water level rises until bubbles start
appearing.
This test however won't really identify
Roger's issue because he has coolant leaking into the oil, a leak which is
much harder to track down.

M

On Fri., Nov. 17, 2023, 9:24 p.m. Wayne Schultz via Healeys, <
[email-masked]> wrote:

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<div dir=3D"auto">Very interesting Wayne, I=C2=A0 test for a head gasket le=
ak opposite way.<div dir=3D"auto">Remove the radiator cap and fill the radi=
ator (preferably with water only to prevent antifreeze spilling everywhere)=
.</div><div dir=3D"auto">Remove the rocker shaft (usually easier than tryin=
g to back off the tappet adjusters) then install an adaptor a spark plug ho=
le and attach an air line (120 p.s.i.) to the adaptor. When the air pressur=
e is applied to the offending cylinder the radiator water level rises until=
 bubbles start appearing.</div><div dir=3D"auto">This test however won&#39;=
t really identify=C2=A0</div><div dir=3D"auto">Roger&#39;s issue because he=
 has coolant leaking into the oil, a leak which is much harder to track dow=
n.</div><div dir=3D"auto"><br></div><div dir=3D"auto">M</div></div><br><div=
 class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Fri., Nov. =
17, 2023, 9:24 p.m. Wayne Schultz via Healeys, &lt;<a href=3D"mailto:healey=
[email-masked]" rel=3D"noreferrer noreferrer" target=3D"_blank">healeys@a=
utox.team.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" sty=
le=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div d=
ir=3D"ltr">My path to locate the leak is to pressurize the cooling system t=
o about=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 14 PSI (1 BAR) and see if =
it leaks down. I use a cooling system pressure tester for this. I then use =
a small endoscope inspection camera to inspect all of the bores with the pl=
ugs removed looking for coolant leaking into the cylinders. You might not s=
ee coolant=C2=A0 in the cylinder ,but if one piston is very clean compared =
to others that is suspect. If that is inconclusive I then drop the oil pan =
looking for coolant drips into the oil pan area. The last hard to find leak=
 was behind the middle tappet cover. The raised boss in the block=C2=A0 was=
 porius and only leaked into the oil pan area when the engine was cold.=C2=
=A0 When the engine was hot and expanded there was no leak. The next day wh=
en cold it would drip several=C2=A0 drips per hour. Both of these inspectio=
ns are less invasive than pulling the head, which is my final inspection lo=
oking for the source. good luck.</div>
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