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Hello Rick,
=20
You might check for worn throttle shafts.
=20
David
=20
From: Mgs [mailto:mgs-bounces@autox.team.net] On Behalf Of Richard =
Lindsay via Mgs
Sent: Thursday, March 26, 2020 10:18 AM
To: mgs@autox.team.net List
Subject: [Mgs] XPAG question
=20
Hello friends,
We're house-bound here in Houston with a stay-at-home order in place. =
My chores are done and Nancy's SUV is 'clayed' and waxed. It looks =
as-new, which is pretty good for any SUV.
This morning, after finishing the Toyota, I went back to work on my =
'53 MG TD. It started right up and ran up to a smooth 3000rpm. After =
that, the choke control immediately went in a bit leaving the engine to =
idle at 2000rpm, with the choke lightly applied. After warm, and with =
the choke pushed full in, the idle dropped to about 900rpm, with a few =
misses preventing a totally smooth idle. And those words begin my =
question.
The engine stumbles when given a little 'wellie' and after gaining =
engine speed, it runs quite unevenly. No amount of coaxing will get it =
over 3000rpm. So, what's wrong?! Timing is set properly.
The stumble is characteristic of leaning out, as when the carb =
dampers are empty. And overly lean charge is indicated by the fact that =
when cold, with enrichment, to engine will rev to 3000rpm easily.=20
I'm going to lower the jets another couple of 'flats' to see if that =
helps. In the mean time I ask: What else might I have missed?
=20
Rick
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style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>Hello Rick,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>You might check for worn throttle shafts.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'><o:p> </o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>David<o:p></o:p></span></p><p class=3DMsoNormal><a =
name=3D"_MailEndCompose"><span =
style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
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4.0pt'><div><div style=3D'border:none;border-top:solid #B5C4DF =
1.0pt;padding:3.0pt 0in 0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span>=
</b><span style=3D'font-size:10.0pt;font-family:"Tahoma","sans-serif"'> =
Mgs [mailto:mgs-bounces@autox.team.net] <b>On Behalf Of </b>Richard =
Lindsay via Mgs<br><b>Sent:</b> Thursday, March 26, 2020 10:18 =
AM<br><b>To:</b> mgs@autox.team.net List<br><b>Subject:</b> [Mgs] XPAG =
question<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p class=3DMsoNormal>Hello =
friends,<o:p></o:p></p><div><p class=3DMsoNormal> We're =
house-bound here in Houston with a stay-at-home order in place. My =
chores are done and Nancy's SUV is 'clayed' and waxed. It looks as-new, =
which is pretty good for any SUV.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif"'> This morning, =
after finishing the Toyota, I went back to work on my '53 MG TD. It =
started right up and ran up to a smooth 3000rpm. After that, the choke =
control immediately went in a bit leaving the engine to idle at 2000rpm, =
with the choke lightly applied. After warm, and with the choke pushed =
full in, the idle dropped to about 900rpm, with a few misses preventing =
a totally smooth idle. And those words begin my =
question.</span><o:p></o:p></p></div><div><p class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif"'> The engine stumbles =
when given a little 'wellie' and after gaining engine speed, it runs =
quite unevenly. No amount of coaxing will get it over 3000rpm. So, =
what's wrong?! Timing is set =
properly.</span><o:p></o:p></p></div><div><p class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif"'> The stumble is =
characteristic of leaning out, as when the carb dampers are empty. And =
overly lean charge is indicated by the fact that when cold, with =
enrichment, to engine will rev to 3000rpm =
easily. </span><o:p></o:p></p></div><div><p class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif"'> I'm going to =
lower the jets another couple of 'flats' to see if that helps. In the =
mean time I ask: What else might I have =
missed?</span><o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-family:"Arial","sans-serif"'>Rick</span><o:p></o:p></p></di=
v></div></div></div></body></html>
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