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Thanks to all who have obviously given this misfire issue considerable
thought. I will be sure to check all suggestions.
I should like to point out however that it is the immediate vanishing of
the misfire after filling the fuel tank that has me confused.
This has happened three times simce the problem appeared.
I just don't understand how an ignition problem could change as a result of
filling the tank.
Furthermore I'm convinced that this is not a fuel starvation problem
because the amount of engine power being used has no effect.
Totally baffled.
Thanks again to all ... I'll report back.
On Thu., Sep. 29, 2022, 9:14 a.m. Alan Seigrist via Healeys, <
healeys@autox.team.net> wrote:
> Hi John -
>
> Yes, that was the point I was trying to make, sorry if it fell through ba=
d
> interpretation! As Ed McMahon used to say, "You Are Correct Sir!"
>
> Cheers,
>
> Alan
>
> On Thu, Sep 29, 2022 at 7:53 PM john harper <ah100tech@gmail.com> wrote:
>
>> Alan
>>
>> Coils can fail with heat and then recover when cooled. I had one that ha=
d
>> these symptoms and when looking closely I saw that the insulating oil ha=
d
>> run out through a very small crack in the bottom of the case.
>>
>> On Thu, 29 Sept 2022 at 10:34, Alan Seigrist <healey.nut@gmail.com>
>> wrote:
>>
>>> Michael -
>>>
>>> Just as a follow up to my email since the symptoms seem to manifest
>>> themself ...
>>>
>>> - whether the car is warmed up or not - this typically will exclude
>>> anything related to fuel or the coil
>>> - whether the car is under load or not - this typically will exclude
>>> anything related to fuel
>>> - whether the choke is pulled or not - this typically will exclude
>>> anything related to fuel
>>> - somewhat intermittent but systematically under all conditions -
>>> suggests to me wiring / ground issues
>>>
>>> Given this I'd check (as a priority):
>>>
>>> - Battery Master (when these fail they will ground the coil)
>>> - primary ignition wire (white) from the switch to coil (cycle the
>>> connections)
>>> - motor ground straps (cycle the connections)
>>> - loose wires in the dizzy
>>> - loose ignition wires into the dizzy or spark plug
>>>
>>> Other things to possibly do (as secondary):
>>>
>>> - replace rotor
>>> - replace dizzy cap
>>>
>>> I don't think it would be contacts or condensor simply because this
>>> would either be very regular all the time, or maybe sensitive to temp.
>>>
>>> Best,
>>>
>>> Alan
>>>
>>>
>>> On Thu, Sep 29, 2022 at 4:46 PM Bob Spidell <bspidell@comcast.net>
>>> wrote:
>>>
>>>> re: "... I don=E2=80=99t recall if that wire is separate from the dist=
ributor
>>>> wire ..."
>>>>
>>>> It is (or should be). If the battery switch is in the 'OFF' position i=
t
>>>> grounds the coil primary so no spark.
>>>>
>>>>
>>>> On 9/28/2022 8:34 PM, Alan Seigrist wrote:
>>>>
>>>> Hi Michael -
>>>>
>>>> Have you tried cycling the connections on the white wire from the
>>>> ignition switch to the coil, and also from the coil to the distributor=
.
>>>>
>>>> You might also want to try disconnecting the black and white wire at
>>>> the coil from the battery master switch - if it=E2=80=99s failing you=
=E2=80=99ll get weird
>>>> symptoms like this. If that wire is disconnected the car should run n=
o
>>>> problem. I don=E2=80=99t recall if that wire is separate from the dis=
tributor
>>>> wire, if it isn=E2=80=99t you=E2=80=99ll have to disconnect it from un=
derneath the master
>>>> switch itself.
>>>>
>>>> Best,
>>>>
>>>> Alan
>>>>
>>>>
>>>> _______________________________________________
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>>>
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>>>
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>>>
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<div dir=3D"auto">Thanks to all who have obviously given this misfire issue=
considerable thought. I will be sure to check all suggestions.=C2=A0<div d=
ir=3D"auto">I=C2=A0 should like to point out however that it is the immedia=
te vanishing of the misfire after filling the fuel tank that has me confuse=
d.=C2=A0</div><div dir=3D"auto">This has happened three times simce the pro=
blem appeared.</div><div dir=3D"auto">I just don't understand how an ig=
nition problem could change as a result of filling the tank.</div><div dir=
=3D"auto">Furthermore I'm convinced that this is not a fuel starvation =
problem because the amount of engine power being used has no effect.</div><=
div dir=3D"auto">Totally baffled.</div><div dir=3D"auto">Thanks again to al=
l ... I'll=C2=A0 report back.</div></div><br><div class=3D"gmail_quote"=
><div dir=3D"ltr" class=3D"gmail_attr">On Thu., Sep. 29, 2022, 9:14 a.m. Al=
an Seigrist via Healeys, <<a href=3D"mailto:healeys@autox.team.net";>heal=
eys@autox.team.net</a>> wrote:<br></div><blockquote class=3D"gmail_quote=
" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><=
div dir=3D"ltr">Hi John -<div><br></div><div>Yes, that was the point I was =
trying to make, sorry if it fell through bad interpretation!=C2=A0 As Ed Mc=
Mahon used to say, "You Are Correct Sir!"</div><div><br></div><di=
v>Cheers,</div><div><br></div><div>Alan</div></div><br><div class=3D"gmail_=
quote"><div dir=3D"ltr" class=3D"gmail_attr">On Thu, Sep 29, 2022 at 7:53 P=
M john harper <<a href=3D"mailto:ah100tech@gmail.com"; target=3D"_blank" =
rel=3D"noreferrer">ah100tech@gmail.com</a>> wrote:<br></div><blockquote =
class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px sol=
id rgb(204,204,204);padding-left:1ex"><div dir=3D"ltr">Alan<div><br></div><=
div>Coils can fail with heat and then recover when cooled. I had one that h=
ad these symptoms and when looking closely I saw that the insulating oil ha=
d run out through a very small=C2=A0crack in the bottom of the case.</div><=
/div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">O=
n Thu, 29 Sept 2022 at 10:34, Alan Seigrist <<a href=3D"mailto:healey.nu=
t@gmail.com" target=3D"_blank" rel=3D"noreferrer">healey.nut@gmail.com</a>&=
gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0=
px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div =
dir=3D"ltr"><div dir=3D"ltr">Michael -<br><br>Just as a follow up to my ema=
il since the symptoms seem to manifest themself=C2=A0=C2=A0...=C2=A0</div><=
div dir=3D"ltr"><ul><li>whether the car is warmed up or not - this typicall=
y will exclude anything related to fuel or the coil</li><li>whether the car=
is under load or not - this typically will exclude anything related to fue=
l</li><li>whether the choke is pulled or not - this typically will exclude =
anything related to fuel</li><li>somewhat intermittent but systematically u=
nder all conditions - suggests to me wiring / ground issues</li></ul><div>G=
iven this I'd check (as a priority):<br><ul><li>Battery Master (when th=
ese fail they will ground the coil)</li><li>primary ignition wire (white) f=
rom the switch to coil (cycle the connections)</li><li>motor ground straps =
(cycle the connections)</li><li>loose wires in the dizzy</li><li>loose igni=
tion=C2=A0wires into the dizzy or spark plug</li></ul><div>Other things to =
possibly do (as secondary):</div></div><div><ul><li>replace rotor</li><li>r=
eplace dizzy cap</li></ul></div>I don't think it would be contacts or c=
ondensor simply because this would either be very regular=C2=A0all the time=
, or maybe sensitive to temp.<br><br>Best,</div><div dir=3D"ltr"><br></div>=
<div>Alan<br><br></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" clas=
s=3D"gmail_attr">On Thu, Sep 29, 2022 at 4:46 PM Bob Spidell <<a href=3D=
"mailto:bspidell@comcast.net"; target=3D"_blank" rel=3D"noreferrer">bspidell=
@comcast.net</a>> wrote:<br></div><blockquote class=3D"gmail_quote" styl=
e=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);paddin=
g-left:1ex">
=20
=20
=20
<div>
re: "... I don=E2=80=99t recall if that wire is separate from the
distributor wire ..."<br>
<br>
It is (or should be). If the battery switch is in the 'OFF' pos=
ition
it grounds the coil primary so no spark.<br>
<br>
<br>
<div>On 9/28/2022 8:34 PM, Alan Seigrist
wrote:<br>
</div>
<blockquote type=3D"cite">
=20
<div dir=3D"auto">Hi Michael -</div>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto">Have you tried cycling the connections on the
white wire from the ignition switch to the coil, and also from
the coil to the distributor.</div>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto">You might also want to try disconnecting the black
and white wire at the coil from the battery master switch - if
it=E2=80=99s failing you=E2=80=99ll get weird symptoms like this.=
=C2=A0 If that wire
is disconnected the car should run no problem.=C2=A0 I don=E2=80=99=
t recall
if that wire is separate from the distributor wire, if it isn=E2=80=
=99t
you=E2=80=99ll have to disconnect it from underneath the master swi=
tch
itself.</div>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto">Best,</div>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto">Alan</div>
</blockquote></div><br>
</blockquote></div></div>
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