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Sent from my iPhone
Begin forwarded message:
> From: Perry Small <healeyguy@aol.com>
> Date: September 28, 2022 at 8:42:39 PM EDT
> To: Michael Salter <michaelsalter@gmail.com>
> Subject: Re: [Healeys] Austin Healey 100 Misfire Diagnosis.
>=20
> =EF=BB=BFMichael
> Not sure what plug / coil wires you have on the car but it is a fairly com=
mon problem the develop poor connections at the wire ends on the cap and coi=
l. Sounds like a weak spark. The spark plug color being about the same on al=
l 4 plugs would lead me to the coil / distributor wire.=20
> Perry
>=20
> Sent from my iPhone
>=20
>>> On Sep 28, 2022, at 8:20 PM, Michael Salter via Healeys <healeys@autox.t=
eam.net> wrote:
>>>=20
>> =EF=BB=BF
>> Excellent suggestions Jim, thank you.=20
>>=20
>> M
>>=20
>>> On Wed., Sep. 28, 2022, 7:22 p.m. Rjhco, <rjhco459@gmail.com> wrote:
>>> It is not fuel. It is an intermittent ground. Check the ground wire in=
side of the distributor and on the coil. If no luck, replace high tension fr=
om coil to distributor.
>>> Also, check ground from engine to chassis. Do you have woven wire groun=
d? They rust internally.
>>> Best regards,
>>> Jim
>>>=20
>>>>> On Sep 28, 2022, at 5:35 PM, Michael Salter <michaelsalter@gmail.com> w=
rote:
>>>>>=20
>>>> =EF=BB=BF
>>>> This problem has plagued me for over 1000 miles.
>>>>=20
>>>> Today I had to drive some 200 miles and this is how it went:
>>>>=20
>>>> Starting from cold I experienced a persistent and irregular misfire.
>>>>=20
>>>> Pulling the choke out made no perceivable difference.
>>>>=20
>>>> Power was not much affected and the car cruised along well in top overd=
rive with just regular periods of misfiring.
>>>>=20
>>>> Climbing slopes really made no difference, even when full throttle was a=
pplied for 10 - 15 seconds.
>>>>=20
>>>> Misfire continued for some 90 miles with no change when the engine was f=
ully heated up.
>>>>=20
>>>> I could really do nothing to influence the rate of the misfire although=
it did seem to be slightly less evident at low throttle settings.
>>>>=20
>>>> After 90 miles I stopped briefly to get fuel and upon starting off it w=
as quite evident that the misfire had disappeared almost completely and rema=
ined that way for at least 80 miles after which it started to misfire just a=
little as I came to the end of the trip.
>>>>=20
>>>> POSSIBLE CAUSES
>>>>=20
>>>> 1. Plugs =E2=80=A6 not like a bad plug. The misfire seems to be mo=
re than 1 cylinder and never came close to being the regular beat that 1 plu=
g misfiring produces. All the plugs have a healthy brown/ grey appearance.
>>>> 2. Coil =E2=80=A6 In my experience coils are very reliable but wh=
en they do fail they tend to fail as they warm up and the problem gets worse=
as the coil warms up
>>>> 3. Points =E2=80=A6 a possibility but the dwell is set at exactly 6=
0 degrees and does not waver at all when the engine is running in the shop.
>>>> 4. Fuel pump =E2=80=A6 if the engine was starving for fuel because=
of a fuel supply issue caused by a blockage or failing pump the problem wou=
ld get worse when the demand for fuel increased, as in climbing a hill of fu=
ll throttle. This was absolutely not the case.
>>>>=20
>>>>=20
>>>>=20
>>>> Any ideas folks?
>>>>=20
>>>>=20
>>>>=20
>>>> _______________________________________________
>>>> Support Team.Net http://www.team.net/donate.html
>>>> Suggested annual donation $12.75
>>>>=20
>>>> Archive: http://www.team.net/pipermail/healeys http://autox.team.net/ar=
chive/healeys
>>>>=20
>>>> Healeys@autox.team.net
>>>> http://autox.team.net/mailman/listinfo/healeys
>>>>=20
>>>> Unsubscribe/Manage: http://autox.team.net/mailman/options/healeys/rjhco=
459@gmail.com
>>>>=20
>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
>> Suggested annual donation $12.75
>>=20
>> Archive: http://www.team.net/pipermail/healeys http://autox.team.net/arch=
ive/healeys
>>=20
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>>=20
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uy@aol.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"><br><br><div dir=3D"ltr">Sent from my iPhon=
e</div><div dir=3D"ltr"><br>Begin forwarded message:<br><br></div><blockquot=
e type=3D"cite"><div dir=3D"ltr"><b>From:</b> Perry Small <healeyguy@aol.=
com><br><b>Date:</b> September 28, 2022 at 8:42:39 PM EDT<br><b>To:</b> M=
ichael Salter <michaelsalter@gmail.com><br><b>Subject:</b> <b>Re: [Hea=
leys] Austin Healey 100 Misfire Diagnosis.</b><br><br></div></blockquote><bl=
ockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<meta http-equiv=3D"content=
-type" content=3D"text/html; charset=3Dutf-8">Michael<div>Not sure what plug=
/ coil wires you have on the car but it is a fairly common problem the deve=
lop poor connections at the wire ends on the cap and coil. Sounds like a wea=
k spark. The spark plug color being about the same on all 4 plugs would lead=
me to the coil / distributor wire. </div><div>Perry<br><br><div dir=3D=
"ltr">Sent from my iPhone</div><div dir=3D"ltr"><br><blockquote type=3D"cite=
">On Sep 28, 2022, at 8:20 PM, Michael Salter via Healeys <healeys@autox.=
team.net> wrote:<br><br></blockquote></div><blockquote type=3D"cite"><div=
dir=3D"ltr">=EF=BB=BF<div dir=3D"auto">Excellent suggestions Jim, thank you=
. <div dir=3D"auto"><br></div><div dir=3D"auto">M</div></div><br><div c=
lass=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On Wed., Sep. 28,=
2022, 7:22 p.m. Rjhco, <<a href=3D"mailto:rjhco459@gmail.com";>rjhco459@g=
mail.com</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"a=
uto">It is not fuel. It is an intermittent ground. Check the gro=
und wire inside of the distributor and on the coil. If no luck, replace high=
tension from coil to distributor.<div>Also, check ground from engine to cha=
ssis. Do you have woven wire ground? They rust internally.<br><d=
iv dir=3D"ltr">Best regards,<div>Jim</div></div><div dir=3D"ltr"><br><blockq=
uote type=3D"cite">On Sep 28, 2022, at 5:35 PM, Michael Salter <<a href=3D=
"mailto:michaelsalter@gmail.com"; target=3D"_blank" rel=3D"noreferrer">michae=
lsalter@gmail.com</a>> wrote:<br><br></blockquote></div><blockquote type=3D=
"cite"><div dir=3D"ltr">=EF=BB=BF<div dir=3D"ltr"><div class=3D"gmail_defaul=
t" style=3D"font-family:arial,sans-serif;font-size:small">
<p class=3D"MsoNormal" style=3D"text-align:center;margin:0in 0in 8pt;line-he=
ight:107%;font-size:11pt;font-family:"Calibri",sans-serif" align=3D=
"center"><b><span style=3D"font-size:18pt;line-height:107%"><span></span></s=
pan></b></p>
<p class=3D"MsoNormal" style=3D"margin:0in 0in 8pt;line-height:107%;font-siz=
e:11pt;font-family:"Calibri",sans-serif">This problem has plagued m=
e for over 1000 miles.<span></span></p>
<p class=3D"MsoNormal" style=3D"margin:0in 0in 8pt;line-height:107%;font-siz=
e:11pt;font-family:"Calibri",sans-serif">Today I had to drive some=
200 miles and this is how it went:<span></span></p>
<p class=3D"MsoNormal" style=3D"margin:0in 0in 8pt;line-height:107%;font-siz=
e:11pt;font-family:"Calibri",sans-serif">Starting from cold I expe=
rienced a persistent and irregular misfire.
<span></span></p>
<p class=3D"MsoNormal" style=3D"margin:0in 0in 8pt;line-height:107%;font-siz=
e:11pt;font-family:"Calibri",sans-serif">Pulling the choke out mad=
e no perceivable difference.<span></span></p>
<p class=3D"MsoNormal" style=3D"margin:0in 0in 8pt;line-height:107%;font-siz=
e:11pt;font-family:"Calibri",sans-serif">Power was not much affect=
ed and the car cruised along well
in top overdrive with just regular periods of misfiring.<span></span></p>
<p class=3D"MsoNormal" style=3D"margin:0in 0in 8pt;line-height:107%;font-siz=
e:11pt;font-family:"Calibri",sans-serif">Climbing slopes really ma=
de no difference, even when full
throttle was applied for 10 - 15 seconds.<span></span></p>
<p class=3D"MsoNormal" style=3D"margin:0in 0in 8pt;line-height:107%;font-siz=
e:11pt;font-family:"Calibri",sans-serif">Misfire continued for som=
e 90 miles with no change when the
engine was fully heated up.<span></span></p>
<p class=3D"MsoNormal" style=3D"margin:0in 0in 8pt;line-height:107%;font-siz=
e:11pt;font-family:"Calibri",sans-serif">I could really do nothing=
to influence the rate of the
misfire although it did seem to be slightly less evident at low throttle
settings.<span></span></p>
<p class=3D"MsoNormal" style=3D"margin:0in 0in 8pt;line-height:107%;font-siz=
e:11pt;font-family:"Calibri",sans-serif">After 90 miles I stopped b=
riefly to get fuel and upon
starting off it was quite evident that the misfire had disappeared almost co=
mpletely
and remained that way for at least 80 miles after which it started to misfir=
e
just a little as I came to the end of the trip.<span></span></p>
<p class=3D"MsoNormal" style=3D"margin:0in 0in 8pt;line-height:107%;font-siz=
e:11pt;font-family:"Calibri",sans-serif"><u><span> </span>POS=
SIBLE CAUSES</u><span></span></p>
<p style=3D"margin:0in 0in 0in 0.5in;line-height:107%;font-size:11pt;font-fa=
mily:"Calibri",sans-serif"><span><span>1.<span style=3D"font:7pt &=
quot;Times New Roman"">
</span></span></span>Plugs =E2=80=A6 not like a bad plug. The misfire seems
to be more than 1 cylinder and never came close to being the regular beat th=
at 1
plug misfiring produces. All the plugs have a healthy brown/ grey appearance=
.<span></span></p>
<p style=3D"margin:0in 0in 0in 0.5in;line-height:107%;font-size:11pt;font-fa=
mily:"Calibri",sans-serif"><span><span>2.<span style=3D"font:7pt &=
quot;Times New Roman"">
</span></span></span>Coil =E2=80=A6<span> </span>In
my experience coils are very reliable but when they do fail they tend to fai=
l
as they warm up and the problem gets worse as the coil warms up<span></span>=
</p>
<p style=3D"margin:0in 0in 0in 0.5in;line-height:107%;font-size:11pt;font-fa=
mily:"Calibri",sans-serif"><span><span>3.<span style=3D"font:7pt &=
quot;Times New Roman"">
</span></span></span>Points =E2=80=A6 a possibility but the dwell is set at
exactly 60 degrees and does not waver at all when the engine is running in t=
he
shop.<span></span></p>
<p style=3D"margin:0in 0in 8pt 0.5in;line-height:107%;font-size:11pt;font-fa=
mily:"Calibri",sans-serif"><span><span>4.<span style=3D"font:7pt &=
quot;Times New Roman"">
</span></span></span>Fuel pump =E2=80=A6 if the engine was starving for fuel=
because of a fuel supply issue caused by a blockage or failing pump the prob=
lem
would get worse when the demand for fuel increased, as in climbing a hill of=
full throttle. This was absolutely not the case.</p><p style=3D"margin:0in 0=
in 8pt 0.5in;line-height:107%;font-size:11pt;font-family:"Calibri"=
,sans-serif"><br></p><p style=3D"margin:0in 0in 8pt 0.5in;line-height:107%;f=
ont-size:11pt;font-family:"Calibri",sans-serif">Any ideas folks?<b=
r></p><p style=3D"margin:0in 0in 8pt 0.5in;line-height:107%;font-size:11pt;f=
ont-family:"Calibri",sans-serif"><br></p>
</div></div>
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