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Re: [Healeys] Tapitty tapping of Fuel Pump

To: healeys@autox.team.net
Subject: Re: [Healeys] Tapitty tapping of Fuel Pump
From: Kees Oudesluijs <coudesluijs@chello.nl>
Date: Wed, 24 Jun 2020 17:59:04 +0200
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <56318762.1123695.1592788322491.ref@mail.yahoo.com> <56318762.1123695.1592788322491@mail.yahoo.com> <CAFBXTkJr+asHvTG6d0fTySaGj-f95u_PGu1so9t7EphaRs+v-g@mail.gmail.com> <CABXhz8-u3ZUNMau5Ndx-k5pep+cH2LNpJGuEWDKFpa0jxeyeTw@mail.gmail.com> <1721144240.1541294.1592846429796@mail.yahoo.com> <20200624151859.127D1A25AA@autox.team.net>
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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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>         http://autox.team.net/mailman/options/healeys/healey.nut@gmail.com
>
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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">
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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> </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> </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> </o:p></p>
        <div>
          <p class="MsoNormal"><span
              style="font-size:12.0pt;font-family:&quot;Comic Sans
              MS&quot;;color:black">Explain how they work, please.  
<o:p></o:p></span></p>
          <div>
            <p class="MsoNormal" style="margin-bottom:12.0pt"><span
                style="font-size:12.0pt;font-family:&quot;Comic Sans
                MS&quot;;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:&quot;Arial&quot;,sans-serif;color:black">-----Original
                  Message-----<br>
                  From: i erbs <a class="moz-txt-link-rfc2396E" 
href="mailto:eyera3000@gmail.com";>&lt;eyera3000@gmail.com&gt;</a><br>
                  To: Alan Seigrist <a class="moz-txt-link-rfc2396E" 
href="mailto:healey.nut@gmail.com";>&lt;healey.nut@gmail.com&gt;</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";>&lt;healeys@autox.team.net&gt;</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:&quot;Arial&quot;,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:&quot;Arial&quot;,sans-serif;color:black"><o:p> </o:p></span></p>
                  <div>
                    <div id="yiv5807702342yqtfd50363">
                      <div>
                        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,sans-serif;color:black">On
                            Sun, Jun 21, 2020, 7:09 PM Alan Seigrist
                            &lt;<a href="mailto:healey.nut@gmail.com";
                              target="_blank" 
moz-do-not-send="true">healey.nut@gmail.com</a>&gt;
                            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:&quot;Arial&quot;,sans-serif;color:black">Hi
                              Gary - <o:p></o:p></span></p>
                          <div>
                            <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,sans-serif;color:black"><o:p> </o:p></span></p>
                          </div>
                          <div>
                            <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,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. 
                                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:&quot;Arial&quot;,sans-serif;color:black"><o:p> </o:p></span></p>
                          </div>
                          <div>
                            <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,sans-serif;color:black">Best,<o:p></o:p></span></p>
                          </div>
                          <div>
                            <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,sans-serif;color:black"><o:p> </o:p></span></p>
                          </div>
                          <div>
                            <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,sans-serif;color:black">Alan<o:p></o:p></span></p>
                          </div>
                        </div>
                        <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,sans-serif;color:black"><o:p> </o:p></span></p>
                        <div>
                          <div>
                            <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,sans-serif;color:black">On
                                Mon, Jun 22, 2020 at 9:12 AM
                                editorgary--- via Healeys &lt;<a
                                  href="mailto:healeys@autox.team.net";
                                  target="_blank" 
moz-do-not-send="true">healeys@autox.team.net</a>&gt;
                                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:&quot;Arial&quot;,sans-serif;color:black">Yesterday
                                    I took my Healey BN&amp; 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:&quot;Arial&quot;,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:&quot;Arial&quot;,sans-serif;color:black"><o:p> </o:p></span></p>
                              </div>
                              <div>
                                <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,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:&quot;Arial&quot;,sans-serif;color:black"><o:p> </o:p></span></p>
                              </div>
                              <div>
                                <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,sans-serif;color:black">Anyone?<o:p></o:p></span></p>
                              </div>
                              <div>
                                <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,sans-serif;color:black"><o:p> </o:p></span></p>
                              </div>
                              <div>
                                <p class="MsoNormal"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,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:&quot;Arial&quot;,sans-serif;color:black"><o:p> </o:p></span></p>
                              </div>
                            </div>
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                        <p class="MsoNormal"
                          style="margin-bottom:12.0pt"><span
style="font-size:10.0pt;font-family:&quot;Arial&quot;,sans-serif;color:black"><o:p> </o:p></span></p>
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moz-do-not-send="true">http://autox.team.net/mailman/options/healeys/warthodson@aol.com</a><o:p></o:p></span></p>
        <p class="MsoNormal"><o:p> </o:p></p>
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      <br>
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      <pre class="moz-quote-pre" 
wrap="">_______________________________________________

Archive: <a class="moz-txt-link-freetext" 
href="http://www.team.net/pipermail/healeys";>http://www.team.net/pipermail/healeys</a>
 <a class="moz-txt-link-freetext" 
href="http://autox.team.net/archive";>http://autox.team.net/archive</a>

<a class="moz-txt-link-abbreviated" 
href="mailto:Healeys@autox.team.net";>Healeys@autox.team.net</a>
<a class="moz-txt-link-freetext" 
href="http://autox.team.net/mailman/listinfo/healeys";>http://autox.team.net/mailman/listinfo/healeys</a>


</pre>
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