--===============0515596806991591107==
--001a114035682286f5053bf64c42
Content-Transfer-Encoding: quoted-printable
There is one mode of failure for a water pump that can cause sudden
overheating. If the impeller either corrodes and falls apart or the
impeller comes off the shaft, no water will circulate except by
thermo-syphon. Neither of these are common, but they can happen.
Then of course there was the plastic impellers for MG water pumps that
would get soft and fall off when the coolant got hot.
Rick
On Wed, Sep 7, 2016 at 1:40 PM, BJ8Healeys <sbyers@ec.rr.com> wrote:
> Water pumps usually do not fail suddenly, but get noisy and leak out the
> weep hole in the bottom of the pump housing when they begin to fail. I
> would suspect the thermostat failed closed, preventing the coolant from
> reaching the radiator.
>
>
>
> Steve Byers
>
> HBJ8L/36666
>
> BJ8 Registry
>
> AHCA Delegate at Large
>
> Havelock, NC
>
>
>
>
>
> *From:* Healeys [mailto:healeys-bounces@autox.team.net] *On Behalf Of *Si=
mon
> Lachlan
> *Sent:* Wednesday, September 07, 2016 12:20 PM
> *To:* 'Healey List'
> *Subject:* [Healeys] Overheating query
>
>
>
> Hi,
>
> This isn=E2=80=99t the usual one ....=E2=80=9Dmy car always runs hot; wha=
t=E2=80=99s the cure?=E2=80=9D etc
>
> No, this is my very own original.....
>
> Background:-
>
> 1) The car, MkII BT7, has never had overheating issues before today.
>
> 2) It has a new, 12 month, modern design radiator.
>
> 3) It has the correct type(original design) Smiths sleeved
> thermostat. (5 years old +/-).
>
> 4) The waterpump was in the car when I bought the car +/- 25 yrs ago=
.
>
> Today=E2=80=99s symptoms:-
>
> 1) I took it out to the pub today and, on returning, I noticed that
> there was HEAT and then that the gauge was off the scale.
>
> 2) There was plenty of coolant in the rad and it didn=E2=80=99t seem=
overly
> hot.
>
> 3) I didn=E2=80=99t have much time, but I got the impression that th=
e rad
> was not blowing steam or making more of a =E2=80=9Ccooling-off noise=E2=
=80=9D than usual.
>
> 4) I also got the impression that the engine was hotter than the rad=
.
>
> Is this typical of a failed water pump?
>
> How can one differentiate between thermostat issues and waterpump issues?
>
>
>
> Any ideas?
>
> Simon
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
>
> Healeys@autox.team.net
> http://autox.team.net/mailman/listinfo/healeys
>
> Unsubscribe/Manage: http://autox.team.net/mailman/
> options/healeys/richard.ewald@gmail.com
>
>
>
--001a114035682286f5053bf64c42
Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">There is one mode of failure for a water pump that can cau=
se sudden overheating.=C2=A0 If the impeller either corrodes and falls apar=
t or the impeller comes off the shaft, no water will circulate except by th=
ermo-syphon.=C2=A0 Neither of these are common, but they can happen.<div>Th=
en of course there was the plastic impellers for MG water pumps that would =
get soft and fall off when the coolant got hot. =C2=A0</div><div>Rick</div>=
</div><div class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Wed, Sep=
7, 2016 at 1:40 PM, BJ8Healeys <span dir=3D"ltr"><<a href=3D"mailto:sby=
ers@ec.rr.com" target=3D"_blank">sbyers@ec.rr.com</a>></span> wrote:<br>=
<blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1p=
x #ccc solid;padding-left:1ex"><div lang=3D"EN-US" link=3D"blue" vlink=3D"p=
urple"><div><p class=3D"MsoNormal"><span style=3D"font-family:"Comic S=
ans MS";color:#002060">Water pumps usually do not fail suddenly, but g=
et noisy and leak out the weep hole in the bottom of the pump housing when =
they begin to fail.=C2=A0 I would suspect the thermostat failed closed, pre=
venting the coolant from reaching the radiator.<u></u><u></u></span></p><p =
class=3D"MsoNormal"><span style=3D"font-family:"Comic Sans MS";co=
lor:#002060"><u></u>=C2=A0<u></u></span></p><div><p class=3D"MsoNormal"><sp=
an style=3D"font-family:"Comic Sans MS";color:#002060">Steve Byer=
s</span><span style=3D"color:#002060"><u></u><u></u></span></p><p class=3D"=
MsoNormal"><span style=3D"font-family:"Comic Sans MS";color:#0020=
60">HBJ8L/36666</span><span style=3D"color:#002060"><u></u><u></u></span></=
p><p class=3D"MsoNormal"><span style=3D"font-family:"Comic Sans MS&quo=
t;;color:#002060">BJ8 Registry</span><span style=3D"color:#002060"><u></u><=
u></u></span></p><p class=3D"MsoNormal"><span style=3D"font-family:"Co=
mic Sans MS";color:#002060">AHCA Delegate at Large</span><span style=
=3D"color:#002060"><u></u><u></u></span></p><p class=3D"MsoNormal"><span st=
yle=3D"font-family:"Comic Sans MS";color:#002060">Havelock, NC=C2=
=A0 </span><span style=3D"color:#002060"><u></u><u></u></span></p><p class=
=3D"MsoNormal"><span style=3D"color:#002060"><u></u>=C2=A0<u></u></span></p=
></div><p class=3D"MsoNormal"><span style=3D"font-family:"Comic Sans M=
S";color:#002060"><u></u>=C2=A0<u></u></span></p><div><div style=3D"bo=
rder:none;border-top:solid #b5c4df 1.0pt;padding:3.0pt 0in 0in 0in"><p clas=
s=3D"MsoNormal"><b><span style=3D"font-size:10.0pt;font-family:"Tahoma=
","sans-serif"">From:</span></b><span style=3D"font-size:10.=
0pt;font-family:"Tahoma","sans-serif""> Healeys [mailto=
:<a href=3D"mailto:healeys-bounces@autox.team.net"; target=3D"_blank">healey=
s-bounces@autox.<wbr>team.net</a>] <b>On Behalf Of </b>Simon Lachlan<br><b>=
Sent:</b> Wednesday, September 07, 2016 12:20 PM<br><b>To:</b> 'Healey =
List'<br><b>Subject:</b> [Healeys] Overheating query<u></u><u></u></spa=
n></p></div></div><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><p class=
=3D"MsoNormal"><span lang=3D"EN-GB">Hi,<u></u><u></u></span></p><p class=3D=
"MsoNormal"><span lang=3D"EN-GB">This isn=E2=80=99t the usual one ....=E2=
=80=9Dmy car always runs hot; what=E2=80=99s the cure?=E2=80=9D etc<u></u><=
u></u></span></p><p class=3D"MsoNormal"><span lang=3D"EN-GB">No, this is my=
very own original.....<u></u><u></u></span></p><p class=3D"MsoNormal"><spa=
n lang=3D"EN-GB">Background:-<u></u><u></u></span></p><p><u></u><span lang=
=3D"EN-GB"><span>1)<span style=3D"font:7.0pt "Times New Roman"">=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 </span></span></span><u></u><span lang=3D"EN=
-GB">The car, MkII BT7, has never had overheating issues before today.<u></=
u><u></u></span></p><p><u></u><span lang=3D"EN-GB"><span>2)<span style=3D"f=
ont:7.0pt "Times New Roman"">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 </spa=
n></span></span><u></u><span lang=3D"EN-GB">It has a new, 12 month, modern =
design radiator.<u></u><u></u></span></p><p><u></u><span lang=3D"EN-GB"><sp=
an>3)<span style=3D"font:7.0pt "Times New Roman"">=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0 </span></span></span><u></u><span lang=3D"EN-GB">It has the=
correct type(original design) Smiths sleeved thermostat. (5 years old +/-)=
.<u></u><u></u></span></p><p><u></u><span lang=3D"EN-GB"><span>4)<span styl=
e=3D"font:7.0pt "Times New Roman"">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
</span></span></span><u></u><span lang=3D"EN-GB">The waterpump was in the =
car when I bought the car +/- 25 yrs ago.<u></u><u></u></span></p><p class=
=3D"MsoNormal"><span lang=3D"EN-GB">Today=E2=80=99s symptoms:- <u></u><u></=
u></span></p><p><u></u><span lang=3D"EN-GB"><span>1)<span style=3D"font:7.0=
pt "Times New Roman"">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 </span></spa=
n></span><u></u><span lang=3D"EN-GB">I took it out to the pub today and, on=
returning, I noticed that there was HEAT and then that the gauge was off t=
he scale.<u></u><u></u></span></p><p><u></u><span lang=3D"EN-GB"><span>2)<s=
pan style=3D"font:7.0pt "Times New Roman"">=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 </span></span></span><u></u><span lang=3D"EN-GB">There was plenty=
of coolant in the rad and it didn=E2=80=99t seem overly hot.<u></u><u></u>=
</span></p><p><u></u><span lang=3D"EN-GB"><span>3)<span style=3D"font:7.0pt=
"Times New Roman"">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 </span></span>=
</span><u></u><span lang=3D"EN-GB">I didn=E2=80=99t have much time, but I g=
ot the impression that the rad was not blowing steam or making more of a =
=E2=80=9Ccooling-off noise=E2=80=9D than usual.<u></u><u></u></span></p><p>=
<u></u><span lang=3D"EN-GB"><span>4)<span style=3D"font:7.0pt "Times N=
ew Roman"">=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 </span></span></span><u></u>=
<span lang=3D"EN-GB">I also got the impression that the engine was hotter t=
han the rad.<u></u><u></u></span></p><p class=3D"MsoNormal"><span lang=3D"E=
N-GB">Is this typical of a failed water pump?<u></u><u></u></span></p><p cl=
ass=3D"MsoNormal"><span lang=3D"EN-GB">How can one differentiate between th=
ermostat issues and waterpump issues?<u></u><u></u></span></p><p class=3D"M=
soNormal"><span lang=3D"EN-GB"><u></u>=C2=A0<u></u></span></p><p class=3D"M=
soNormal"><span lang=3D"EN-GB">Any ideas?<u></u><u></u></span></p><p class=
=3D"MsoNormal"><span lang=3D"EN-GB">Simon<u></u><u></u></span></p></div></d=
iv><br>______________________________<wbr>_________________<br>
rer" target=3D"_blank">http://www.team.net/donate.<wbr>html</a><br>
Archive: <a href=3D"http://www.team.net/archive"; rel=3D"noreferrer" target=
=3D"_blank">http://www.team.net/archive</a><br>
Forums: <a href=3D"http://www.team.net/forums"; rel=3D"noreferrer" target=3D=
"_blank">http://www.team.net/forums</a><br>
<br>
<a href=3D"mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a><br>
<a href=3D"http://autox.team.net/mailman/listinfo/healeys"; rel=3D"noreferre=
r" target=3D"_blank">http://autox.team.net/mailman/<wbr>listinfo/healeys</a=
><br>
<br>
s/richard.ewald@gmail.com" rel=3D"noreferrer" target=3D"_blank">http://auto=
x.team.net/mailman/<wbr>options/healeys/richard.ewald@<wbr>gmail.com</a><br=
>
<br>
<br></blockquote></div><br></div>
--001a114035682286f5053bf64c42--
--===============0515596806991591107==
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
_______________________________________________
Archive: http://www.team.net/archive
Healeys@autox.team.net
http://autox.team.net/mailman/listinfo/healeys
--===============0515596806991591107==--
|