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Pull the plugs just to be sure it's not isolate. =C2=A0Maybe a bad plug wi=
re? Anyway that's where I would start
Joe #923
On Wednesday, September 28, 2022, 07:43:30 PM EDT, Roger Grace <roggrac=
e@telus.net> wrote: =20
=20
The real mystery is why did it stop after you refuelled ?Was there enough =
time for something hot to cool down - but that does not really explain thei=
nitial missing when cold.Presume that you have given the cap and rotor a go=
od visual ... tracking can have weird effects.=20
Plug leads ?rg
On Wed, Sep 28, 2022 at 3:46 PM Michael Salter <michaelsalter@gmail.com> wr=
ote:
This problem has plagued me for over 1000 miles.
Today I had to drive some 200 miles and this is how it went:
Starting from cold I experienced a persistent and irregular misfire.
Pulling the choke out made no perceivable difference.
Power was not much affected and the car cruised along wellin top overdrive =
with just regular periods of misfiring.
Climbing slopes really made no difference, even when fullthrottle was appli=
ed for 10 - 15 seconds.
Misfire continued for some 90 miles with no change when theengine was fully=
heated up.
I could really do nothing to influence the rate of themisfire although it d=
id seem to be slightly less evident at low throttlesettings.
After 90 miles I stopped briefly to get fuel and uponstarting off it was qu=
ite evident that the misfire had disappeared almost completelyand remained =
that way for at least 80 miles after which it started to misfirejust a litt=
le as I came to the end of the trip.
=C2=A0POSSIBLE CAUSES
1.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Plugs =E2=80=A6 not like a bad plug. The mi=
sfire seemsto be more than 1 cylinder and never came close to being the reg=
ular beat that 1plug misfiring produces. All the plugs have a healthy brown=
/ grey appearance.
2.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Coil =E2=80=A6=C2=A0 Inmy experience coils =
are very reliable but when they do fail they tend to failas they warm up an=
d the problem gets worse as the coil warms up
3.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Points =E2=80=A6 a possibility but the dwel=
l is set atexactly 60 degrees and does not waver at all when the engine is =
running in theshop.
4.=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0Fuel pump =E2=80=A6 if the engine was starv=
ing for fuelbecause of a fuel supply issue caused by a blockage or failing =
pump the problemwould get worse when the demand for fuel increased, as in c=
limbing a hill offull throttle. This was absolutely not the case.
Any ideas folks?
_______________________________________________
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Healeys@autox.team.net
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o.com
=20
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<html><head></head><body><div class=3D"ydpe0dea832yahoo-style-wrap" style=
=3D"font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px=
;"><div></div>
<div dir=3D"ltr" data-setdir=3D"false">Pull the plugs just to be su=
re it's not isolate. Maybe a bad plug wire? Anyway that's where I wou=
ld start</div><div dir=3D"ltr" data-setdir=3D"false"><br></div><div dir=3D"=
ltr" data-setdir=3D"false">Joe #923</div><div><br></div>
=20
</div><div id=3D"yahoo_quoted_4930094406" class=3D"yahoo_quoted">
<div style=3D"font-family:'Helvetica Neue', Helvetica, Arial, s=
ans-serif;font-size:13px;color:#26282a;">
=20
<div>
On Wednesday, September 28, 2022, 07:43:30 PM EDT, Roge=
r Grace <roggrace@telus.net> wrote:
</div>
<div><br></div>
<div><br></div>
<div><div id=3D"yiv7435965385"><div><div dir=3D"ltr"><div>T=
he real mystery is why did it stop after you refuelled ?</div><div>Was ther=
e enough time for something hot to cool down - but that does not really exp=
lain theinitial missing when cold.</div><div>Presume that you have given th=
e cap and rotor a good visual ... tracking can have weird effects. <br clea=
r=3D"none"></div><div>Plug leads ?</div><div>rg<br clear=3D"none"></div></d=
iv><br clear=3D"none"><div class=3D"yiv7435965385gmail_quote"><div id=3D"yi=
v7435965385yqt85235" class=3D"yiv7435965385yqt2966025520"><div dir=3D"ltr" =
class=3D"yiv7435965385gmail_attr">On Wed, Sep 28, 2022 at 3:46 PM Michael S=
alter <<a rel=3D"nofollow noopener noreferrer" shape=3D"rect" ymailto=3D=
"mailto:michaelsalter@gmail.com"; target=3D"_blank" href=3D"mailto:michaelsa=
lter@gmail.com">michaelsalter@gmail.com</a>> wrote:<br clear=3D"none"></=
div><blockquote style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb=
(204,204,204);padding-left:1ex;" class=3D"yiv7435965385gmail_quote"><div di=
r=3D"ltr"><div style=3D"font-family:arial, sans-serif;font-size:small;" cla=
ss=3D"yiv7435965385gmail_default">
<p align=3D"center" style=3D"text-align:center;margin:0in 0in 8pt;line-heig=
ht:107%;font-size:11pt;font-family:sans-serif;" class=3D"yiv7435965385MsoNo=
rmal"><b><span style=3D"font-size:18pt;line-height:107%;"><span></span></sp=
an></b></p>
<p style=3D"margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:=
sans-serif;" class=3D"yiv7435965385MsoNormal">This problem has plagued me f=
or over 1000 miles.<span></span></p>
<p style=3D"margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:=
sans-serif;" class=3D"yiv7435965385MsoNormal">Today I had to drive some 200=
miles and this is how it went:<span></span></p>
<p style=3D"margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:=
sans-serif;" class=3D"yiv7435965385MsoNormal">Starting from cold I experien=
ced a persistent and irregular misfire.
<span></span></p>
<p style=3D"margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:=
sans-serif;" class=3D"yiv7435965385MsoNormal">Pulling the choke out made no=
perceivable difference.<span></span></p>
<p style=3D"margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:=
sans-serif;" class=3D"yiv7435965385MsoNormal">Power was not much affected a=
nd the car cruised along well
in top overdrive with just regular periods of misfiring.<span></span></p>
<p style=3D"margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:=
sans-serif;" class=3D"yiv7435965385MsoNormal">Climbing slopes really made n=
o difference, even when full
throttle was applied for 10 - 15 seconds.<span></span></p>
<p style=3D"margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:=
sans-serif;" class=3D"yiv7435965385MsoNormal">Misfire continued for some 90=
miles with no change when the
engine was fully heated up.<span></span></p>
<p style=3D"margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:=
sans-serif;" class=3D"yiv7435965385MsoNormal">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 style=3D"margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:=
sans-serif;" class=3D"yiv7435965385MsoNormal">After 90 miles I stopped brie=
fly to get fuel and upon
starting off it was quite evident that the misfire had disappeared almost c=
ompletely
and remained that way for at least 80 miles after which it started to misfi=
re
just a little as I came to the end of the trip.<span></span></p>
<p style=3D"margin:0in 0in 8pt;line-height:107%;font-size:11pt;font-family:=
sans-serif;" class=3D"yiv7435965385MsoNormal"><u><span> </span>POSSIBL=
E CAUSES</u><span></span></p>
<p style=3D"margin:0in 0in 0in 0.5in;line-height:107%;font-size:11pt;font-f=
amily:sans-serif;"><span><span>1.<span style=3D"font:7pt New;"> =
</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 t=
hat 1
plug misfiring produces. All the plugs have a healthy brown/ grey appearanc=
e.<span></span></p>
<p style=3D"margin:0in 0in 0in 0.5in;line-height:107%;font-size:11pt;font-f=
amily:sans-serif;"><span><span>2.<span style=3D"font:7pt New;"> =
</span></span></span>Coil =E2=80=A6<span> </span>In
my experience coils are very reliable but when they do fail they tend to fa=
il
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-f=
amily:sans-serif;"><span><span>3.<span style=3D"font:7pt New;"> =
</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 =
the
shop.<span></span></p>
<p style=3D"margin:0in 0in 8pt 0.5in;line-height:107%;font-size:11pt;font-f=
amily:sans-serif;"><span><span>4.<span style=3D"font:7pt New;"> =
</span></span></span>Fuel pump =E2=80=A6 if the engine was starving for fue=
l
because of a fuel supply issue caused by a blockage or failing pump the pro=
blem
would get worse when the demand for fuel increased, as in climbing a hill o=
f
full throttle. This was absolutely not the case.</p><p style=3D"margin:0in =
0in 8pt 0.5in;line-height:107%;font-size:11pt;font-family:sans-serif;"><br =
clear=3D"none"></p><p style=3D"margin:0in 0in 8pt 0.5in;line-height:107%;fo=
nt-size:11pt;font-family:sans-serif;">Any ideas folks?<br clear=3D"none"></=
p><p style=3D"margin:0in 0in 8pt 0.5in;line-height:107%;font-size:11pt;font=
-family:sans-serif;"><br clear=3D"none"></p>
</div></div>
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_______________________________________________
Archive: http://www.team.net/pipermail/healeys
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