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That depends on the temperature of the fuel and the composition.
If it is under 3,8psi there is no problem as the pump delivers 3,8psi
(that is the original equipment AUF 301/3/5 or its SU-Burlen replacement
AZX1308)
Kees Oudesluijs
Op 22-6-2020 om 19:38 schreef Perry via Healeys:
>
> I just finished a 10 minute dash to the past on the internet looking
> at the clothes pin remedy. We might as well start talking about motor
> oil again. Hope not!!!!
>
> All kinds of claims and reasons why clothespins works or not.
>
> Lets run this bit past the mechanics/engineers/experienced AH owners
> (thatâ??s all of you) out there. How much fuel pump pressure does it
> take to overcome the bubble caused by the vapor lock? It was suggested
> it only takes 5 PSI.
>
> P
>
> Sent from Mail <https://go.microsoft.com/fwlink/?LinkId=550986> for
> Windows 10
>
> *Sent: *Monday, June 22, 2020 1:21 PM
> *Subject: *Re: [Healeys] Tapitty tapping of Fuel Pump
>
> Explain how they work, please.
>
> Gary Hodson
>
> -----Original Message-----
> From: i erbs <eyera3000@gmail.com>
> To: Alan Seigrist <healey.nut@gmail.com>
> Cc: Editorgary@aol.com; Ahealey help <healeys@autox.team.net>
> Sent: Mon, Jun 22, 2020 10:46 am
> Subject: Re: [Healeys] Tapitty tapping of Fuel Pump
>
> wooden clothes pins worked great when I lived in Los Angeles.
>
> On Sun, Jun 21, 2020, 7:09 PM Alan Seigrist <healey.nut@gmail.com
>
> Hi Gary -
>
> If you start hearing the pump run really quickly, it can be
> indicative of vapor lock getting back into the fuel line... can
> happen at the end of long trips. It's because the fuel starts
> vaporizing around where the line goes into the floats, and the
> float jet then is no longer cutting off fuel flow because it is
> pushing vapor into the float bowls, which leaks out the overflow
> tube. As long as your car is running it should be okay, you might
> use more fuel than normal. Try wiring a piece of wood to the
> incoming fuel line - this is an old trick with Atlantics to act as
> a heat sink on hot days and stop vapor lock on the Atlantics which
> use mechanical fuel pumps.
>
> Best,
>
> Alan
>
> On Mon, Jun 22, 2020 at 9:12 AM editorgary--- via Healeys
>
> Yesterday I took my Healey BN& out for its first good run of
> the season -- 75 miles of southern Oregon backroads -- with
> our local Rogue Euro Car Group. Everything was terrific from
> start to finish. Car started on the first push of the button
> after sitting for six weeks, ran smoothly from start to
> finish, never faltered in restarts, everything nominal.
>
>
> Except that, towards the end of the run on a pretty hot day
> (in mid 90s though the car never ran warm all day) as I was
> cruising along about 40 mph, the fuel pump started tapping at
> a high rate of speed and pretty continuously -- certain enough
> so I could hear it behind me. I have a standard original-spec
> points-style fuel pump, purchased new from Moss about 10 years
> ago and running without any issues every since.
>
> Any thoughts from anyone -- could it just have been the heat?
> As noted, the car never missed a beat, so fuel was getting
> through the carbs smoothly at all times.
>
> Anyone?
>
> Gary Anderson
>
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
> Suggested annual donation $12.75
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> Archive: http://www.team.net/pipermail/healeys
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> Suggested annual donation $12.75
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<p>That depends on the temperature of the fuel and the composition.
<br>
</p>
<p>If it is under 3,8psi there is no problem as the pump delivers
3,8psi (that is the original equipment AUF 301/3/5 or its
SU-Burlen replacement AZX1308)</p>
<p>Kees Oudesluijs</p>
<p><br>
</p>
<p><br>
</p>
<div class="moz-cite-prefix">Op 22-6-2020 om 19:38 schreef Perry via
Healeys:<br>
</div>
<blockquote type="cite"
cite="mid:20200624151859.127D1A25AA@autox.team.net">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<div class="WordSection1">
<p class="MsoNormal">I just finished a 10 minute dash to the
past on the internet looking at the clothes pin remedy. We
might as well start talking about motor oil again. Hope
not!!!!</p>
<p class="MsoNormal">All kinds of claims and reasons why
clothespins works or not. </p>
<p class="MsoNormal">Lets run this bit past the
mechanics/engineers/experienced AH owners (thatâ??s all of you)
out there. How much fuel pump pressure does it take to
overcome the bubble caused by the vapor lock? It was suggested
it only takes 5 PSI.</p>
<p class="MsoNormal">P</p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<p class="MsoNormal">Sent from <a
href="https://go.microsoft.com/fwlink/?LinkId=550986"
moz-do-not-send="true">Mail</a> for Windows 10</p>
<p class="MsoNormal"><o:p>Â </o:p></p>
<div
style="mso-element:para-border-div;border:none;border-top:solid
#E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal" style="border:none;padding:0in"><b>From:
</b><a href="mailto:healeys@autox.team.net"
moz-do-not-send="true">warthodson--- via Healeys</a><br>
<b>Sent: </b>Monday, June 22, 2020 1:21 PM<br>
<b>To: </b><a href="mailto:eyera3000@gmail.com"
moz-do-not-send="true">eyera3000@gmail.com</a>; <a
href="mailto:healey.nut@gmail.com"
moz-do-not-send="true">healey.nut@gmail.com</a><br>
<b>Cc: </b><a href="mailto:Editorgary@aol.com"
moz-do-not-send="true">Editorgary@aol.com</a>; <a
href="mailto:healeys@autox.team.net"
moz-do-not-send="true">healeys@autox.team.net</a><br>
<b>Subject: </b>Re: [Healeys] Tapitty tapping of Fuel Pump</p>
</div>
<p class="MsoNormal"><o:p>Â </o:p></p>
<div>
<p class="MsoNormal"><span
style="font-size:12.0pt;font-family:"Comic Sans
MS";color:black">Explain how they work, please.Â
<o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-size:12.0pt;font-family:"Comic Sans
MS";color:black">Gary Hodson<br>
<br>
<o:p></o:p></span></p>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">-----Original
Message-----<br>
From: i erbs <a class="moz-txt-link-rfc2396E"
href="mailto:eyera3000@gmail.com"><eyera3000@gmail.com></a><br>
To: Alan Seigrist <a class="moz-txt-link-rfc2396E"
href="mailto:healey.nut@gmail.com"><healey.nut@gmail.com></a><br>
Cc: <a class="moz-txt-link-abbreviated"
href="mailto:Editorgary@aol.com">Editorgary@aol.com</a>; Ahealey help
<a class="moz-txt-link-rfc2396E"
href="mailto:healeys@autox.team.net"><healeys@autox.team.net></a><br>
Sent: Mon, Jun 22, 2020 10:46 am<br>
Subject: Re: [Healeys] Tapitty tapping of Fuel
Pump<o:p></o:p></span></p>
<div id="yiv5807702342">
<div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">wooden
clothes pins worked great when I lived in Los
Angeles. <o:p></o:p></span></p>
</div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p>Â </o:p></span></p>
<div>
<div id="yiv5807702342yqtfd50363">
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">On
Sun, Jun 21, 2020, 7:09 PM Alan Seigrist
<<a href="mailto:healey.nut@gmail.com"
target="_blank"
moz-do-not-send="true">healey.nut@gmail.com</a>>
wrote:<o:p></o:p></span></p>
</div>
</div>
<blockquote style="border:none;border-left:solid
#CCCCCC 1.0pt;padding:0in 0in 0in
6.0pt;margin-left:4.8pt;margin-right:0in">
<div id="yiv5807702342yqtfd81016">
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Hi
Gary - <o:p></o:p></span></p>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p>Â </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">If
you start hearing the pump run really
quickly, it can be indicative of vapor
lock getting back into the fuel line...
can happen at the end of long trips.Â
It's because the fuel starts vaporizing
around where the line goes into the
floats, and the float jet then is no
longer cutting off fuel flow because it
is pushing vapor into the float bowls,
which leaks out the overflow tube. As
long as your car is running it should be
okay, you might use more fuel than
normal. Try wiring a piece of wood to
the incoming fuel line - this is an old
trick with Atlantics to act as a heat
sink on hot days and stop vapor lock on
the Atlantics which use mechanical fuel
pumps.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p>Â </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Best,<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p>Â </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Alan<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p>Â </o:p></span></p>
<div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">On
Mon, Jun 22, 2020 at 9:12 AM
editorgary--- via Healeys <<a
href="mailto:healeys@autox.team.net"
target="_blank"
moz-do-not-send="true">healeys@autox.team.net</a>>
wrote:<o:p></o:p></span></p>
</div>
<blockquote
style="border:none;border-left:solid #CCCCCC
1.0pt;padding:0in 0in 0in
6.0pt;margin-left:4.8pt;margin-right:0in">
<div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Yesterday
I took my Healey BN& out for its
first good run of the season -- 75
miles of southern Oregon backroads
-- with our local Rogue Euro Car
Group. Everything was terrific from
start to finish. Car started on the
first push of the button after
sitting for six weeks, ran smoothly
from start to finish, never faltered
in restarts, everything
nominal.<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><br>
Except that, towards the end of the
run on a pretty hot day (in mid 90s
though the car never ran warm all
day) as I was cruising along about
40 mph, the fuel pump started
tapping at a high rate of speed and
pretty continuously -- certain
enough so I could hear it behind me.
I have a standard original-spec
points-style fuel pump, purchased
new from Moss about 10 years ago and
running without any issues every
since. <o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p>Â </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Any
thoughts from anyone -- could it
just have been the heat? As noted,
the car never missed a beat, so fuel
was getting through the carbs
smoothly at all times.
<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p>Â </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Anyone?<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p>Â </o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Gary
Anderson<o:p></o:p></span></p>
</div>
<div>
<p class="MsoNormal"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p>Â </o:p></span></p>
</div>
</div>
<p class="MsoNormal"
style="margin-bottom:12.0pt"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">_______________________________________________<br>
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<o:p></o:p></span></p>
<div id="yiv5807702342yqtfd87571">
<p class="MsoNormal"
style="margin-bottom:12.0pt"><span
style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black"><o:p>Â </o:p></span></p>
</div>
</blockquote>
</div>
</div>
</div>
</div>
</div>
</div>
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<p class="MsoNormal"><o:p>Â </o:p></p>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre"
wrap="">_______________________________________________
Archive: <a class="moz-txt-link-freetext"
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