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Re: [Healeys] Distributor to spark plug lead continuity

To: Bob Spidell <bspidell@comcast.net> definitions=2020-05-21_09:2020-05-21, 2020-05-21 signatures=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-2002250000 definitions=main-2005210114
Subject: Re: [Healeys] Distributor to spark plug lead continuity
From: Linwood Rose via Healeys <healeys@autox.team.net>
Date: Thu, 21 May 2020 11:34:46 -0400
Cc: Healeys@autox.team.net
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
References: <337efcea-dc9a-6207-8358-60d44158a7bf@comcast.net>
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Don=E2=80=99t know how distributor cap turned into radiator cap?????
Lin

Sent from my iPhone

> On May 21, 2020, at 11:30 AM, Bob Spidell <bspidell@comcast.net> wrote:
>=20
> =EF=BB=BF First, why on earth did you have a spark plug lead on a radiator=
 cap??? (presume you meant 'distributor' cap?)
>=20
> It looks like you have your multimeter set to diode test (maybe that's how=
 continuity works on your MM?).* The reading is probably ohms, indicating a v=
ery low resistance circuit, but to be sure turn the MM control knob one clic=
k clockwise, to the 200 ohm range ('200 omega').* It'll probably give the sa=
me reading; i.e. .792 ohms, which is about what you'd expect from a short st=
randed copper wire lead (IIRC, one ohm per foot of cable is considered norma=
l, even copper has some resistance).
>=20
> Bob=20
>=20
>=20
> On 5/21/2020 7:55 AM, Linwood Rose via Healeys wrote:
>> Hi guys,
>> Educate me. When doing some preventative maintenance, I pulled a spark pl=
ug lead out of the radiator cap (using a 123 distributor) the cable pulled a=
way from the terminal - not a particularly unusual outcome. Got a new 90 deg=
ree terminal and crimped it on to the cable (Pertronix cable) and before I p=
ut the boot on the end of the cable I thought I would check the continuity. I=
t barely dropped below 1.
>>=20
>> So then I checked a brand new, never used, cable made-up by AH Spares. As=
 shown in the image below when the sensors are attached to each end of the c=
able I get a reading of .792 which is not sufficient to even sound the beepe=
r on the multimeter device. I suppose there are degrees of continuity (not j=
ust on/off) but I guess I expected the alarm to sound and the reading to dro=
p to near zero.
>>=20
>> Could someone interpret these findings for me?
>>=20
>> Thanks, as always.
>>=20
>> Lin
>>=20
>> <IMG_0608.jpeg>
>>=20
>>=20
>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
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>>=20
>> Archive: http://www.team.net/pipermail/healeys http://autox.team.net/arch=
ive
>>=20
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>>=20
>> Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/bspidel=
l@comcast.net
>>=20
>=20
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>=20
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ose@mac.com
>=20

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto">Don=E2=80=99t know how distributor cap turn=
ed into radiator cap?????<div>Lin<br><br><div dir=3D"ltr">Sent from my iPhon=
e</div><div dir=3D"ltr"><br><blockquote type=3D"cite">On May 21, 2020, at 11=
:30 AM, Bob Spidell &lt;bspidell@comcast.net&gt; wrote:<br><br></blockquote>=
</div><blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF
 =20
    <meta http-equiv=3D"Content-Type" content=3D"text/html;
      charset=3Dwindows-1252">
 =20
 =20
    First, why on earth did you have a spark plug lead on a radiator
    cap??? (presume you meant 'distributor' cap?)<br>
    <br>
    It looks like you have your multimeter set to diode test (maybe
    that's how continuity works on your MM?).* The reading is probably
    ohms, indicating a very low resistance circuit, but to be sure turn
    the MM control knob one click clockwise, to the 200 ohm range ('200
    omega').* It'll probably give the same reading; i.e. .792 ohms,
    which is about what you'd expect from a short stranded copper wire
    lead (IIRC, one ohm per foot of cable is considered normal, even
    copper has some resistance).<br>
    <br>
    Bob <br>
    <br>
    <br>
    <div class=3D"moz-cite-prefix">On 5/21/2020 7:55 AM, Linwood Rose via
      Healeys wrote:<br>
    </div>
    <blockquote type=3D"cite" cite=3D"mid:9FFFB856-992A-4DC8-9790-3E486792C1=
A4@mac.com">
      <meta http-equiv=3D"Content-Type" content=3D"text/html;
        charset=3Dwindows-1252">
      Hi guys,
      <div class=3D"">Educate me. When doing some preventative
        maintenance, I pulled a spark plug lead out of the radiator cap
        (using a 123 distributor) the cable pulled away from the
        terminal - not a particularly unusual outcome. Got a new 90
        degree terminal and crimped it on to the cable (Pertronix cable)
        and before I put the boot on the end of the cable I thought I
        would check the continuity. It barely dropped below 1.</div>
      <div class=3D""><br class=3D"">
      </div>
      <div class=3D"">So then I checked a brand new, never used, cable
        made-up by AH Spares. As shown in the image below when the
        sensors are attached to each end of the cable I get a reading of
        .792 which is not sufficient to even sound the beeper on the
        multimeter device. I suppose there are degrees of continuity
        (not just on/off) but I guess I expected the alarm to sound and
        the reading to drop to near zero.</div>
      <div class=3D""><br class=3D"">
      </div>
      <div class=3D"">Could someone interpret these findings for me?</div>
      <div class=3D""><br class=3D"">
      </div>
      <div class=3D"">Thanks, as always.</div>
      <div class=3D""><br class=3D"">
      </div>
      <div class=3D"">Lin<br class=3D"">
        <div class=3D""><br class=3D"">
        </div>
        <div class=3D""><div>&lt;IMG_0608.jpeg&gt;</div></div>
      </div>
      <br>
      <fieldset class=3D"mimeAttachmentHeader"></fieldset>
      <pre class=3D"moz-quote-pre" wrap=3D"">_______________________________=
________________
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</pre>
    </blockquote>
    <br>
 =20

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