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Tom, someone suggested a blocked vent in the filler cap =E2=80=93 have =
you checked that? I had that issue with my TC. Car ran fine then for =
no apparent reason shut down. If I waited a while she=E2=80=99d =
re-start run for a while, then the problem would re-occur. However, it =
only ever happened when the tank was fairly full, and I was driving =
reasonably quickly. Driving around town I did not have the issue. My =
filler cap vent was partially blocked so at low speeds the vent was =
working well enough that there was no issue, but at high speeds the vent =
could not keep up and the engine starved of fuel. It seemed that if the =
fuel tank was low, there was sufficient volume of air in the tank that =
the problem did not occur, although I suspect if I had gone any =
distance, it may have eventually. I twigged onto this as when the =
engine stopped, if I immediately opened the filler cap, I could hear a =
=E2=80=9Cwoosh=E2=80=9D of air being sucked into the tank, as it had a =
partial vacuum in it. I simply trimmed a bit off the seal on the filler =
cap so the vent was completely open, and the problem disappeared.
=20
Good luck - Mirek =20
=20
From: Healeys <healeys-bounces@autox.team.net> On Behalf Of Tom Felts =
via Healeys
Sent: Wednesday, September 20, 2023 10:46 AM
To: healeys <healeys@autox.team.net>
Subject: [Healeys] update on shutdown issue
=20
Since having the car towed home I have checked all connections in the =
ignition system, pulled the distributor base plate out and cleaned =
it--the the two pieces were very tight. I have let her run in the =
garage for long periods of time and she has not shut down again so I =
haven't been able to check spark.=20
=20
When it did shut down, it wouldn't take long before she would start =
again then shut down. Then start, then shut down. =20
=20
I know my trial and error method wasn't the best approach, but without =
being able to check spark it seemed appropriate to change out =
components. =20
=20
Tell me if my analysis is correct on this. I thought it might be a fuel =
supply issue. So---I pulled the float bowl covers and all was ok =
there--also pulled and cleaned the carbs. If the float bowl jets were =
stuck in a closed position it would get no gas and eventually shut =
down---but---both would have to stick so each carb wouldn't get gas. =
this seems like an unlikely condition.
=20
If they were stock in the open position it would be dumping gas out of =
the overflow tubes---so, again, unlikely since it would still run. I =
have already changed fuel filter and blew out the line. The pump pumps =
normally and each time I pulled the float bowl caps, they have been full =
of gas. So--I have basically ruled out fuel starvation as a cause. =20
=20
in the garage she sits and purrs forever with no shutdown------so, as I =
mentioned, I can't ch spark
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vlink=3Dpurple style=3D'word-wrap:break-word'><div =
class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'>Tom,=C2=A0 someone suggested a =
blocked vent in the filler cap =E2=80=93 have you checked that?=C2=A0 I =
had that issue with my TC.=C2=A0 Car ran fine then for no apparent =
reason shut down.=C2=A0 If I waited a while she=E2=80=99d re-start run =
for a while, then the problem would re-occur.=C2=A0 However, it only =
ever happened when the tank was fairly full, and I was driving =
reasonably quickly. =C2=A0Driving around town I did not have the issue. =
=C2=A0My filler cap vent was partially blocked=C2=A0 so at low speeds =
the vent was working well enough that there was no issue, but at high =
speeds the vent could not keep up and the engine starved of fuel.=C2=A0 =
It seemed that if the fuel tank was low, there was sufficient volume of =
air in the tank that the problem did not occur, although I suspect if I =
had gone any distance, it may have eventually.=C2=A0 I twigged onto this =
as when the engine stopped, if I immediately opened the filler cap, I =
could hear a =E2=80=9Cwoosh=E2=80=9D of air being sucked into the tank, =
as it had a partial vacuum in it.=C2=A0 I simply trimmed a bit off the =
seal on the filler cap so the vent was completely open, and the problem =
disappeared.<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'><o:p> </o:p></span></p><p =
class=3DMsoNormal><span style=3D'mso-fareast-language:EN-US'>Good luck - =
Mirek=C2=A0 <o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><di=
v style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm =
0cm 0cm'><p class=3DMsoNormal><b><span =
lang=3DEN-US>From:</span></b><span lang=3DEN-US> Healeys =
<healeys-bounces@autox.team.net> <b>On Behalf Of </b>Tom Felts via =
Healeys<br><b>Sent:</b> Wednesday, September 20, 2023 10:46 =
AM<br><b>To:</b> healeys =
<healeys@autox.team.net><br><b>Subject:</b> [Healeys] update on =
shutdown issue<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif;color:black'>Sin=
ce having the car towed home I have checked all connections in the =
ignition system, pulled the distributor base plate out and cleaned =
it--the the two pieces were very tight. I have let her run in the =
garage for long periods of time and she has not shut down again so I =
haven't been able to check =
spark. <o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif;color:black'><o:=
p> </o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif;color:black'>Whe=
n it did shut down, it wouldn't take long before she would start again =
then shut down. Then start, then shut =
down. <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif;color:black'><o:=
p> </o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif;color:black'>I =
know my trial and error method wasn't the best approach, but without =
being able to check spark it seemed appropriate to change out =
components. <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif;color:black'><o:=
p> </o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif;color:black'>Tel=
l me if my analysis is correct on this. I thought it might be a =
fuel supply issue. So---I pulled the float bowl covers and all was =
ok there--also pulled and cleaned the carbs. If the float bowl =
jets were stuck in a closed position it would get no gas and eventually =
shut down---but---both would have to stick so each carb wouldn't get =
gas. this seems like an unlikely =
condition.<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif;color:black'><o:=
p> </o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif;color:black'>If =
they were stock in the open position it would be dumping gas out of the =
overflow tubes---so, again, unlikely since it would still run. I =
have already changed fuel filter and blew out the line. The pump =
pumps normally and each time I pulled the float bowl caps, they have =
been full of gas. So--I have basically ruled out fuel starvation =
as a cause. <o:p></o:p></span></p></div><div><p =
class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif;color:black'>&nb=
sp;<o:p></o:p></span></p></div><div><p class=3DMsoNormal><span =
style=3D'font-size:12.0pt;font-family:"Arial",sans-serif;color:black'>in =
the garage she sits and purrs forever with no shutdown------so, as I =
mentioned, I can't ch =
spark<o:p></o:p></span></p></div></div></div></div></body></html>
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