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Always good to learn of someone=E2=80=99s experiences=E2=80=A6
Hans
Van: Mgs <mgs-bounces@autox.team.net> Namens jimray@hartcom.net
Verzonden: Wednesday, 4 May 2022 21:26
Aan: 'John DiFede' <difejo1@gmail.com>; 'Robert Rutherford' <rrutherf@ucalg=
ary.ca>
CC: MGB-V8@autox.team.net; 'MG Digest' <mgs@autox.team.net>
Onderwerp: Re: [Mgs] Coughing, spitting, and dying
To all of you who responded to my cry for help, THANK YOU so much for your =
suggestions. As it turns out, the root cause of the problem was timing. The=
stock distributor had been upgraded several years ago to a Pertronix elect=
ronic module which had worked itself loose inside the distributor causing t=
he timing to become erratic. Tugging on the leads to the coil would cause t=
he engine to increase its RPMs and run smoothly. Pushing them back into the=
distributor reintroduced the backfire and coughing.
Thanks again for everyone=E2=80=99s help.
Jim
On Behalf Of John DiFede
Sent: Sunday, April 24, 2022 7:28 AM
Subject: Re: [Mgs] Coughing, spitting, and dying
Sounds like a fuel problem. The Edelbrock 1404 is a simple carburetor to w=
ork on as it is a copy of the Carter AFB carb used since the 60=E2=80=99s. =
Is your choke set properly when cold and hot? The AFB used a mechanical =
fuel pump- make sure that facet pump you=E2=80=99re using has the correct f=
uel pressure for the AFB. Also check your vacuum. Is the vacuum reading s=
teady or is the gauge needle fluctuating back and forth? You may have a v=
acuum leak affecting fuel mixture. When the engine is cold and the choke i=
s on you have a rich mixture allowing the engine to run poorly. Once the c=
hoke opens the mixture goes lean due to the vacuum leak possibly leading to=
your motor stalling.
Sent from my iPhone
On Apr 23, 2022, at 11:10 PM, Robert Rutherford <rrutherf@ucalgary.ca <mail=
to:rrutherf@ucalgary.ca> > wrote:
=EF=BB=BF Coughs, spits, dies - sounds like Covid to me.
ic.net> > wrote:
[=E2=96=B3EXTERNAL]
Sounds more like a carb/fuel issue to me. Can=E2=80=99t see how it would be=
electrical.
Sent from my iPad
> wrote:
=EF=BB=BF
Have an 80 MGB V8 conversion that has developed a problem I can=E2=80=99t g=
et my hands around. When cold it coughs and sputters when first starting up=
and when warm will not run at idle without stalling after several minutes.=
Thinking it might be an electrical issue, I replaced the plugs, plug wires=
, distributor cap, coil, and battery. It has a PerTronix Ignitor module ins=
talled which I did not replace. The battery shows 12.7 volts on my meter. T=
he alternator is producing 14.6 volts at ~1500 RPMs and 14.3 under load. Fu=
el is fed to an Edelbrock 1404 carburetor via a Facet electric pump with ne=
w filters in the line at the pump and just before the carburetor. I use 93 =
octane non-ethanol gas. I appreciate any thoughts or suggestions you may ha=
ve.
Jim Ray
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</o:shapelayout></xml><![endif]--></head><body lang=3DNL link=3Dblue vlink=
=3Dpurple style=3D'word-wrap:break-word'><div class=3DWordSection1><p class=
=3DMsoNormal><span lang=3DEN-GB style=3D'mso-fareast-language:EN-US'>Always=
good to learn of someone=E2=80=99s experiences=E2=80=A6<o:p></o:p></span><=
/p><p class=3DMsoNormal><span lang=3DEN-GB style=3D'mso-fareast-language:EN=
-US'><o:p> </o:p></span></p><p class=3DMsoNormal><span lang=3DEN-GB st=
yle=3D'mso-fareast-language:EN-US'>Hans<o:p></o:p></span></p><p class=3DMso=
Normal><span lang=3DEN-GB style=3D'mso-fareast-language:EN-US'><o:p> <=
/o:p></span></p><div><div style=3D'border:none;border-top:solid #E1E1E1 1.0=
pt;padding:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b>Van:</b> Mgs <mgs-=
bounces@autox.team.net> <b>Namens </b>jimray@hartcom.net<br><b>Verzonden=
:</b> Wednesday, 4 May 2022 21:26<br><b>Aan:</b> 'John DiFede' <difejo1@=
gmail.com>; 'Robert Rutherford' <rrutherf@ucalgary.ca><br><b>CC:</=
b> MGB-V8@autox.team.net; 'MG Digest' <mgs@autox.team.net><br><b>Onde=
rwerp:</b> Re: [Mgs] Coughing, spitting, and dying<o:p></o:p></p></div></di=
v><p class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal><span lang=
=3DEN-US>To all of you who responded to my cry for help, THANK YOU so much =
for your suggestions. As it turns out, the root cause of the problem was ti=
ming. The stock distributor had been upgraded several years ago to a Pertro=
nix electronic module which had worked itself loose inside the distributor =
causing the timing to become erratic. Tugging on the leads to the coil woul=
d cause the engine to increase its RPMs and run smoothly. Pushing them back=
into the distributor reintroduced the backfire and coughing. <o:p></o:p></=
span></p><p class=3DMsoNormal><span lang=3DEN-US><o:p> </o:p></span></=
p><p class=3DMsoNormal><span lang=3DEN-US>Thanks again for everyone=E2=80=
=99s help.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US><o:=
p> </o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US>Jim<o:p></=
o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US><o:p> </o:p></s=
pan></p><div><div style=3D'border:none;border-top:solid #E1E1E1 1.0pt;paddi=
ng:3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span lang=3DEN-US>From:</spa=
n></b><span lang=3DEN-US> Mgs <<a href=3D"mailto:mgs-bounces@autox.team.=
net">mgs-bounces@autox.team.net</a>> <b>On Behalf Of </b>John DiFede<br>=
<b>Sent:</b> Sunday, April 24, 2022 7:28 AM<br><b>To:</b> Robert Rutherford=
<<a href=3D"mailto:rrutherf@ucalgary.ca";>rrutherf@ucalgary.ca</a>><b=
r><b>Cc:</b> <a href=3D"mailto:MGB-V8@autox.team.net";>MGB-V8@autox.team.net=
</a>; MG Digest <<a href=3D"mailto:mgs@autox.team.net";>mgs@autox.team.ne=
t</a>><br><b>Subject:</b> Re: [Mgs] Coughing, spitting, and dying<o:p></=
o:p></span></p></div></div><p class=3DMsoNormal><span lang=3DEN-US><o:p>&nb=
sp;</o:p></span></p><p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><sp=
an lang=3DEN-US>Sounds like a fuel problem. The Edelbrock 1404 is a s=
imple carburetor to work on as it is a copy of the Carter AFB carb used sin=
ce the 60=E2=80=99s. Is your choke set properly when cold and hot? &n=
bsp; The AFB used a mechanical fuel pump- make sure that facet pump you=E2=
=80=99re using has the correct fuel pressure for the AFB. Also check =
your vacuum. Is the vacuum reading steady or is the gauge needle fluc=
tuating back and forth? You may have a vacuum leak affecting fuel mi=
xture. When the engine is cold and the choke is on you have a rich mi=
xture allowing the engine to run poorly. Once the choke opens the mix=
ture goes lean due to the vacuum leak possibly leading to your motor stalli=
ng. <o:p></o:p></span></p><div><p class=3DMsoNormal><span lang=3DEN-U=
S>Sent from my iPhone <o:p></o:p></span></p></div><div><p class=3DMsoN=
ormal style=3D'margin-bottom:12.0pt'><span lang=3DEN-US><o:p> </o:p></=
span></p><blockquote style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><p clas=
s=3DMsoNormal style=3D'margin-bottom:12.0pt'><span lang=3DEN-US>On Apr 23, =
2022, at 11:10 PM, Robert Rutherford <<a href=3D"mailto:rrutherf@ucalgar=
y.ca">rrutherf@ucalgary.ca</a>> wrote:<o:p></o:p></span></p></blockquote=
></div><blockquote style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p c=
lass=3DMsoNormal><span lang=3DEN-US>=EF=BB=BF Coughs, spits, dies - sounds =
like Covid to me.<o:p></o:p></span></p><div><p class=3DMsoNormal style=3D'm=
argin-bottom:12.0pt'><span lang=3DEN-US><o:p> </o:p></span></p><blockq=
uote style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=3DMsoNorm=
al><span lang=3DEN-US>On Apr 21, 2022, at 12:34 PM, Max Heim <<a href=3D=
"mailto:mvheim@sonic.net";>mvheim@sonic.net</a>> wrote:<o:p></o:p></span>=
</p></div><p class=3DMsoNormal><span lang=3DEN-US><o:p> </o:p></span><=
/p><div><table class=3DMsoNormalTable border=3D0 cellspacing=3D0 cellpaddin=
g=3D0 style=3D'caret-color: rgb(0, 0, 0);orphans: auto;widows: auto;-webkit=
-text-size-adjust: auto;-webkit-text-stroke-width: 0px;word-spacing:0px'><t=
r><td style=3D'padding:0cm 0cm 0cm 0cm'><p class=3DMsoNormal style=3D'margi=
n-bottom:7.5pt'><span style=3D'font-family:"Helvetica",sans-serif;color:red=
'>[</span><span style=3D'font-family:"Cambria Math",serif;color:red'>=E2=96=
=B3</span><span style=3D'font-family:"Helvetica",sans-serif;color:red'>EXTE=
RNAL]<o:p></o:p></span></p></td></tr></table><p class=3DMsoNormal style=3D'=
margin-bottom:12.0pt'><span lang=3DEN-US><o:p> </o:p></span></p><div><=
p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><span lang=3DEN-US style=
=3D'font-size:9.0pt;font-family:"Helvetica",sans-serif'>Sounds more like a =
carb/fuel issue to me. Can=E2=80=99t see how it would be electrical.<o:p></=
o:p></span></p><div><p class=3DMsoNormal><span lang=3DEN-US style=3D'font-s=
ize:9.0pt;font-family:"Helvetica",sans-serif'>Sent from my iPad<o:p></o:p><=
/span></p></div><div><p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><s=
pan lang=3DEN-US style=3D'font-size:9.0pt;font-family:"Helvetica",sans-seri=
f'><o:p> </o:p></span></p><blockquote style=3D'margin-top:5.0pt;margin=
-bottom:5.0pt'><p class=3DMsoNormal style=3D'margin-bottom:12.0pt'><span la=
ng=3DEN-US style=3D'font-size:9.0pt;font-family:"Helvetica",sans-serif'>On =
Apr 21, 2022, at 11:58 AM,<span class=3Dapple-converted-space> </span>=
<a href=3D"mailto:jimray@hartcom.net";>jimray@hartcom.net</a><span class=3Da=
pple-converted-space> </span>wrote:<o:p></o:p></span></p></blockquote>=
</div><blockquote style=3D'margin-top:5.0pt;margin-bottom:5.0pt'><div><p cl=
ass=3DMsoNormal><span lang=3DEN-US style=3D'font-size:9.0pt;font-family:"Ta=
homa",sans-serif'>=EF=BB=BF</span><span lang=3DEN-US style=3D'font-size:9.0=
pt;font-family:"Helvetica",sans-serif'> <o:p></o:p></span></p><div><p class=
=3DMsoNormal><span lang=3DEN-US style=3D'font-size:12.0pt;font-family:"Aria=
l",sans-serif'>Have an 80 MGB V8 conversion that has developed a problem I =
can=E2=80=99t get my hands around. When cold it coughs and sputters when fi=
rst starting up and when warm will not run at idle without stalling after s=
everal minutes. Thinking it might be an electrical issue, I replaced the pl=
ugs, plug wires, distributor cap, coil, and battery. It has a PerTronix Ign=
itor module installed which I did not replace. The battery shows 12.7 volts=
on my meter. The alternator is producing 14.6 volts at ~1500 RPMs and 14.3=
under load. Fuel is fed to an Edelbrock 1404 carburetor via a Facet electr=
ic pump with new filters in the line at the pump and just before the carbur=
etor. I use 93 octane non-ethanol gas. I appreciate any thoughts or suggest=
ions you may have.</span><span lang=3DEN-US><o:p></o:p></span></p></div><di=
v><p class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:12.0pt;font-fa=
mily:"Arial",sans-serif'> </span><span lang=3DEN-US><o:p></o:p></span>=
</p></div><div><p class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:1=
2.0pt;font-family:"Arial",sans-serif'>Jim Ray</span><span lang=3DEN-US><o:p=
></o:p></span></p></div><div><p class=3DMsoNormal><span lang=3DEN-US style=
=3D'font-size:12.0pt;font-family:"Arial",sans-serif'> </span><span lan=
g=3DEN-US><o:p></o:p></span></p></div><div><p class=3DMsoNormal><span lang=
=3DEN-US style=3D'font-size:12.0pt;font-family:"Arial",sans-serif;color:#37=
3737'> </span><span lang=3DEN-US><o:p></o:p></span></p></div><p class=
=3DMsoNormal><span lang=3DEN-US style=3D'font-size:9.0pt;font-family:"Helve=
tica",sans-serif'>_______________________________________________<br><br><a=
href=3D"mailto:Mgs@autox.team.net";>Mgs@autox.team.net</a><br>Donate:<span =
class=3Dapple-converted-space> </span><a href=3D"http://www.team.net/d=
onate.html">http://www.team.net/donate.html</a><br>Suggested annual donatio=
n $12.75<br><br>Archive:<span class=3Dapple-converted-space> </s=
pan><a href=3D"http://www.team.net/pipermail/mgs";>http://www.team.net/piper=
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cribe:<span class=3Dapple-converted-space> </span><a href=3D"http://au=
tox.team.net/mailman/options/mgs/mvheim@sonic.net">http://autox.team.net/ma=
ilman/options/mgs/mvheim@sonic.net</a><o:p></o:p></span></p></div></blockqu=
ote></div><p class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:9.0pt;=
font-family:"Helvetica",sans-serif'>_______________________________________=
________<br><br></span><span lang=3DEN-US><a href=3D"mailto:Mgs@autox.team.=
net"><span style=3D'font-size:9.0pt;font-family:"Helvetica",sans-serif'>Mgs=
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