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Yep, Randall. The plastic piece that rides on the distributor cam plays side
to side. I suspect that you're right, the heat and vibration wore the plastic.
> On May 15, 2019 at 10:45 PM Randall <tr3driver@ca.rr.com> wrote:
>
> Well, maybe. Is it loose on the point can? Or does the point cam just
> turn back and forth a bit?
> Or does the whole mess move side to side?
>
> It normal for the point cam to be able to turn slightly. But there should
> be no side to side play; and the plastic piece should be tight on the point
> cam.
>
> Side play is usually a sign of wear in the shaft bushing. If the plastic
> piece is loose, its probably just time, heat and vibration vs cheap plastic.
> -- Randall
>
> On 15 May 2019 18:41:10 GMT-07:00, TERRY SMITH <terryrs@comcast.net>
> wrote:
>
> > >
> > Okay, so I was wrong. I thought the intermittent engine miss on
> > the TR3 had to do with a dislodged damper on the forward carb. Test drive
> > said no, engine still stumbled, cleared, stumbled again. Changed fuel
> > filters out because they were due anyway. Problem persisted. Checked the
> > floats movements, all fine. Problem persisted. Finally just swapped the
> > carbs entirely with spares that I knew worked, problem persisted. So...not
> > fuel. If it were valves, it wouldn't be intermittent, unless a valve were
> > sticking, right?
> >
> >
> > Next up assumption is it's electrical. Swapped the distributor,
> > wires and rotor with spares I knew worked. Problem persisted. Checked for
> > potential electrical shorts. Nothing obvious. Yeesh!
> >
> >
> > I run a Pertronix. Went online and read about Pertronix
> > troubleshooting. Piece I read mentioned that the trigger magnet that spins
> > on the rotor can come loose and affect the timing. I checked this and LO!
> > The trigger magnet is indeed loose. I seem to remember when I put it on
> > some eight or nine years ago, that it went on tight. But it now wiggles
> > about an eighth of an inch back and forth, maybe a bit more.
> >
> >
> > So question. Do I remember correctly, it's supposed to be tight?
> > And second, what would cause it to come loose over time?
> >
> >
> > I know it could still be a sticking valve, but this first. Thanks,
> > everyone for patience with this long message.
> >
> >
> > Terry Smith, '59 TR3A
> >
> > New Hampshire
> >
> > >
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>
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<html><head>
<meta charset=3D"UTF-8">
</head><body><p style=3D"font-size: 12pt; font-family: helvetica, arial, sa=
ns-serif; color: rgb(51, 51, 51);">Yep, Randall.  The plastic piece th=
at rides on the distributor cam plays side to side.  I suspect that yo=
u're right, the heat and vibration wore the plastic.</p><p style=3D"fon=
t-size: 12pt; font-family: helvetica, arial, sans-serif; color: rgb(51, 51,=
51);"><br></p><blockquote type=3D"cite">On May 15, 2019 at 10:45 PM Randal=
l <tr3driver@ca.rr.com> wrote: <br> <br>Well, maybe. Is it loose on=
the point can? Or does the point cam just turn back and forth a bit? <br>O=
r does the whole mess move side to side? <br> <br>It normal for the point c=
am to be able to turn slightly. But there should be no side to side play; a=
nd the plastic piece should be tight on the point cam. <br> <br>Side play i=
s usually a sign of wear in the shaft bushing. If the plastic piece is loos=
e, its probably just time, heat and vibration vs cheap plastic. <br>-- Rand=
all <br> <br><div class=3D"ox-562eed7e19-gmail_quote">On 15 May 2019 18:41:=
10 GMT-07:00, TERRY SMITH <terryrs@comcast.net> wrote:<blockquote><=
p style=3D"font-size: 12pt; font-family: helvetica,arial,sans-serif; color:=
#333333;" class=3D"ox-562eed7e19-default-style">Okay, so I was wrong. =
; I thought the intermittent engine miss on the TR3 had to do with a dislod=
ged damper on the forward carb.  Test drive said no, engine still stum=
bled, cleared, stumbled again.  Changed fuel filters out because they =
were due anyway.  Problem persisted.  Checked the floats movement=
s, all fine.  Problem persisted.  Finally just swapped the carbs =
entirely with spares that I knew worked, problem persisted.  So...not =
fuel.  If it were valves, it wouldn't be intermittent, unless a va=
lve were sticking, right?  </p><p style=3D"font-size: 12pt; font-=
family: helvetica,arial,sans-serif; color: #333333;" class=3D"ox-562eed7e19=
-default-style"><br></p><p style=3D"font-size: 12pt; font-family: helvetica=
,arial,sans-serif; color: #333333;" class=3D"ox-562eed7e19-default-style">N=
ext up assumption is it's electrical.  Swapped the distributor, wi=
res and rotor with spares I knew worked.  Problem persisted.  Che=
cked for potential electrical shorts.  Nothing obvious.  Yeesh!</=
p><p style=3D"font-size: 12pt; font-family: helvetica,arial,sans-serif; col=
or: #333333;" class=3D"ox-562eed7e19-default-style"><br></p><p style=3D"fon=
t-size: 12pt; font-family: helvetica,arial,sans-serif; color: #333333;" cla=
ss=3D"ox-562eed7e19-default-style">I run a Pertronix.  Went online and=
read about Pertronix troubleshooting.  Piece I read mentioned that th=
e trigger magnet that spins on the rotor can come loose and affect the timi=
ng.  I checked this and LO!  The trigger magnet is indeed loose.&=
#160; I seem to remember when I put it on some eight or nine years ago=
, that it went on tight.  But it now wiggles about an eighth of an inc=
h back and forth, maybe a bit more.  </p><p style=3D"font-size: 1=
2pt; font-family: helvetica,arial,sans-serif; color: #333333;" class=3D"ox-=
562eed7e19-default-style"><br></p><p style=3D"font-size: 12pt; font-family:=
helvetica,arial,sans-serif; color: #333333;" class=3D"ox-562eed7e19-defaul=
t-style">So question.  Do I remember correctly, it's supposed to b=
e tight?  And second, what would cause it to come loose over time?</p>=
<p style=3D"font-size: 12pt; font-family: helvetica,arial,sans-serif; color=
: #333333;" class=3D"ox-562eed7e19-default-style"><br></p><p style=3D"font-=
size: 12pt; font-family: helvetica,arial,sans-serif; color: #333333;" class=
=3D"ox-562eed7e19-default-style">I know it could still be a sticking valve,=
but this first.  Thanks, everyone for patience with this long message=
.</p><p style=3D"font-size: 12pt; font-family: helvetica,arial,sans-serif; =
color: #333333;" class=3D"ox-562eed7e19-default-style"><br></p><p style=3D"=
font-size: 12pt; font-family: helvetica,arial,sans-serif; color: #333333;" =
class=3D"ox-562eed7e19-default-style">Terry Smith, '59 TR3A</p><p style=
=3D"font-size: 12pt; font-family: helvetica,arial,sans-serif; color: #33333=
3;" class=3D"ox-562eed7e19-default-style">New Hampshire</p></blockquote></d=
iv></blockquote><p style=3D"font-size: 12pt; font-family: helvetica,arial,s=
ans-serif; color: #333333;" class=3D"default-style"><br> </p><blockquo=
te type=3D"cite">** triumphs@autox.team.net ** <br> <br>Donate: http://www.=
team.net/donate.html <br>Archive: http://www.team.net/pipermail/triumphs ht=
tp://www.team.net/archive <br> <br>Unsubscribe/Manage: http://autox.team.ne=
t/mailman/options/triumphs/terryrs@comcast.net <br></blockquote><p style=3D=
"font-size: 12pt; font-family: helvetica,arial,sans-serif; color: #333333;"=
class=3D"default-style"><br> </p></body></html>
=20
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