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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"><div dir=3D"ltr"></div><div dir=3D"ltr">=46rom=
what I have learned with my Porsche, surging idle is when it is too rich. &=
nbsp;How is the fuel ratio set on this carb? On the Porsche it is an i=
dle jet and an air bypass screw. </div><div dir=3D"ltr"><br></div><div d=
ir=3D"ltr">Fwiw, I recently bought an AEM air fuel ratio gauge with a temp s=
niffer that goes in the tail pipe. It was amazing how well it helped m=
e rejet the carbs and get better performance. </div><div dir=3D"ltr"><=
br><blockquote type=3D"cite">On Aug 31, 2024, at 12:53=E2=80=AFPM, Ron Frase=
r via Tigers <tigers@autox.team.net> wrote:<br><br></blockquote></div>=
<blockquote type=3D"cite"><div dir=3D"ltr">=EF=BB=BF<meta http-equiv=3D"Cont=
ent-Type" content=3D"text/html; charset=3Dutf-8"><meta name=3D"Generator" co=
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<o:shapedefaults v:ext=3D"edit" spidmax=3D"1026" />
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<o:shapelayout v:ext=3D"edit">
<o:idmap v:ext=3D"edit" data=3D"1" />
</o:shapelayout></xml><![endif]--><div class=3D"WordSection1"><p class=3D"Ms=
oNormal">I think a low float condition would not let it drive fine.<o:p></o:=
p></p><p class=3D"MsoNormal"><o:p> </o:p></p><p class=3D"MsoNormal">Man=
y conditions can contribute to idle surging so it starts with a process of e=
limination.<o:p></o:p></p><p class=3D"MsoNormal"><o:p> </o:p></p><p cla=
ss=3D"MsoNormal">Systems need to be checked =E2=80=93 air, fuel and spark =E2=
=80=93 loose wire connection, vacuum<o:p></o:p></p><p class=3D"MsoNormal"><o=
:p> </o:p></p><p class=3D"MsoNormal">Ron Fraser<o:p></o:p></p><p class=3D=
"MsoNormal"><o:p> </o:p></p><p class=3D"MsoNormal"><o:p> </o:p></p=
><p class=3D"MsoNormal"><o:p> </o:p></p><p class=3D"MsoNormal"><b>From:=
</b> Rob Hogan <robertdhogan@gmail.com> <br><b>Sent:</b> Saturday, Aug=
ust 31, 2024 3:18 PM<br><b>To:</b> Ron Fraser <rfraser@bluefrog.com><b=
r><b>Cc:</b> Stu <sabre2tgr@gmail.com>; Tiger Net <Tigers@autox.tea=
m.net><br><b>Subject:</b> Re: [Tigers] The latest problem: Surging<o:p></=
o:p></p><p class=3D"MsoNormal"><o:p> </o:p></p><div><div><p class=3D"Ms=
oNormal"><span style=3D"font-size:12.0pt;font-family:"Verdana",san=
s-serif">Isn't idle surging typically from a carburetor low float setting?<o=
:p></o:p></span></p></div></div><p class=3D"MsoNormal"><o:p> </o:p></p>=
<div><div><p class=3D"MsoNormal">On Sat, Aug 31, 2024 at 11:45=E2=80=AFAM Ro=
n Fraser <<a href=3D"mailto:rfraser@bluefrog.com";>rfraser@bluefrog.com</a=
>> wrote:<o:p></o:p></p></div><blockquote style=3D"border:none;border-lef=
t:solid #CCCCCC 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-rig=
ht:0in"><div><div><div><p class=3D"MsoNormal" style=3D"mso-margin-top-alt:au=
to;mso-margin-bottom-alt:auto">Stu<o:p></o:p></p><p class=3D"MsoNormal" styl=
e=3D"mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></=
p><p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-=
alt:auto">Always difficult to troubleshoot remotely.<o:p></o:p></p><p class=3D=
"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">&nb=
sp;<o:p></o:p></p><p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;ms=
o-margin-bottom-alt:auto">You may have to do standard checks on all systems =E2=
=80=93 air, fuel and spark<o:p></o:p></p><p class=3D"MsoNormal" style=3D"mso=
-margin-top-alt:auto;mso-margin-bottom-alt:auto">Alcohol in the fuel can tea=
r up hoses and gaskets<o:p></o:p></p><p class=3D"MsoNormal" style=3D"mso-mar=
gin-top-alt:auto;mso-margin-bottom-alt:auto">Check to make sure fuel filter i=
s OK<o:p></o:p></p><p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;m=
so-margin-bottom-alt:auto">Check for vacuum leaks <o:p></o:p></p><p class=3D=
"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">&nb=
sp;<o:p></o:p></p><p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;ms=
o-margin-bottom-alt:auto">My 1<sup>st</sup> thought =E2=80=93 the fuel level=
is high<o:p></o:p></p><p class=3D"MsoNormal" style=3D"mso-margin-top-alt:au=
to;mso-margin-bottom-alt:auto">Check the float level and check for any debri=
s in the float bowl<o:p></o:p></p><p class=3D"MsoNormal" style=3D"mso-margin=
-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p><p class=3D"M=
soNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Remov=
e the air filter and idle engine to see if it is an air flow problem. <o:p><=
/o:p></p><p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-=
bottom-alt:auto"> <o:p></o:p></p><p class=3D"MsoNormal" style=3D"mso-ma=
rgin-top-alt:auto;mso-margin-bottom-alt:auto">Hope this helps<o:p></o:p></p>=
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-al=
t:auto">Ron Fraser<o:p></o:p></p><p class=3D"MsoNormal" style=3D"mso-margin-=
top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p><p class=3D"Ms=
oNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> =
<o:p></o:p></p><p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-m=
argin-bottom-alt:auto"><b>From:</b> Tigers <<a href=3D"mailto:tigers-boun=
ces@autox.team.net" target=3D"_blank">tigers-bounces@autox.team.net</a>> <=
b>On Behalf Of </b>Stu<br><b>Sent:</b> Saturday, August 31, 2024 9:57 AM<br>=
<b>To:</b> Tiger Net <<a href=3D"mailto:Tigers@autox.team.net"; target=3D"=
_blank">Tigers@autox.team.net</a>><br><b>Subject:</b> [Tigers] The latest=
problem: Surging<o:p></o:p></p><p class=3D"MsoNormal" style=3D"mso-margin-t=
op-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p><div><div><div>=
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-al=
t:auto"><span style=3D"font-size:12.0pt">Ok, so I got the vacuum advance sor=
ted and reset the timing, etc. But now there's another issue.</span><o=
:p></o:p></p></div><div><p class=3D"MsoNormal" style=3D"mso-margin-top-alt:a=
uto;mso-margin-bottom-alt:auto"><span style=3D"font-size:12.0pt"> </spa=
n><o:p></o:p></p></div><div><p class=3D"MsoNormal" style=3D"mso-margin-top-a=
lt:auto;mso-margin-bottom-alt:auto"><span style=3D"font-size:12.0pt">The car=
starts and warms up normally, choke opening, temperature gauge coming up to=
the thermostat temp, etc. But then it starts surging at idle. Acceler=
ating, driving both seem fine. But when it goes back to idle, waiting a=
t a stoplight or something, it starts having these little dips, which soon b=
ecome larger dips, to the point where it stops. It restarts right away=
, then does it again. At a stoplight I have to left foot brake so that=
I can keep my foot on the throttle to keep it alive. </span><o:=
p></o:p></p></div><div><p class=3D"MsoNormal" style=3D"mso-margin-top-alt:au=
to;mso-margin-bottom-alt:auto"><span style=3D"font-size:12.0pt"> </span=
><o:p></o:p></p></div><div><p class=3D"MsoNormal" style=3D"mso-margin-top-al=
t:auto;mso-margin-bottom-alt:auto"><span style=3D"font-size:12.0pt">Here's a=
video I shot in the garage as it started to do it after warming up. A=
nybody seen this before or... cured it?</span><o:p></o:p></p></div><div><p c=
lass=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-alt:au=
to"><span style=3D"font-size:12.0pt"> </span><o:p></o:p></p></div><div>=
<p class=3D"MsoNormal" style=3D"mso-margin-top-alt:auto;mso-margin-bottom-al=
t:auto"><a href=3D"https://www.dropbox.com/scl/fo/0613ys0iegdndjhnjt5a8/AIcz=
a8ouXqEsp57qLWSlZOY?rlkey=3Ds9h2q3sal042y9z3t5oav2uwt&dl=3D0" target=3D"=
_blank">https://www.dropbox.com/scl/fo/0613ys0iegdndjhnjt5a8/AIcza8ouXqEsp57=
qLWSlZOY?rlkey=3Ds9h2q3sal042y9z3t5oav2uwt&dl=3D0</a><o:p></o:p></p></di=
v></div></div></div></div><p class=3D"MsoNormal" style=3D"margin-bottom:12.0=
pt">_______________________________________________<br><br><a href=3D"mailto=
:tigers@autox.team.net" target=3D"_blank">tigers@autox.team.net</a><br><br>D=
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div></blockquote></div></div><span>_________________________________________=
______</span><br><span></span><br><span>tigers@autox.team.net</span><br><spa=
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