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Re: [TR] Vacuum Leak

To: "'TERRY SMITH'" <terryrs@comcast.net>
Subject: Re: [TR] Vacuum Leak
From: "wbeech" <wbeech@flash.net>
Date: Fri, 31 May 2019 16:36:25 -0500
Cc: triumphs@autox.team.net
Delivered-to: mharc@autox.team.net
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Terry,

You should definitely feel the suck, remember the manifold is =
cross-connected so you would have to cover both openings at the same =
time.   Have you tried shooting a little starting fluid into the carbs =
to see if it will try to start that way?  I know this sounds dumb, but =
is the rotor on and seated correctly?(BTDT)

Keep chasing you will find it.

=20

All the best,

Bill

=20

From: Triumphs [mailto:triumphs-bounces@autox.team.net] On Behalf Of =
TERRY SMITH
Sent: Friday, May 31, 2019 3:16 PM
To: triumphs@autox.team.net
Subject: [TR] Vacuum Leak

=20

Randall was right.  I did have multiple problems.  Closer inspection of =
the ground in the distributor plate showed it was connected and tested =
fine with an ohms check, but in truth was hanging on by just a few =
threads.  Fabricated another and now spark is exceptional out of the =
wire.  Don't ask me how I know that but if you'd like a recommendation =
of the type screwdriver to test the wire to ground, I can tell you which =
kind NOT to use. =20

=20

So...the 3 has spark to the plugs and has fuel to the carbs.  Engine =
cranks but won't catch.  Rechecked float specs and they're good.  Reset =
richness to 12 flat start-up specs.  So good.  Ran a timing light to see =
if it had jumped time, tested good. =20

=20

I'm now suspecting a severe enough vacuum leak to keep the gas from =
being sucked into the chambers.  Checked valve lash, no issues.  =
Compression test shows 90 plus in all cylinders.  I can't see the intake =
manifold gasket on the bottom, but that's where it would be...if it is.  =


=20

Question:  with the carbs off and using the solenoid to crank the =
engine, how much should one feel suction against ones hand at the ports =
of the intake manifold?  I'm barely feeling any if at all.  Certainly =
not enough to draw gas in. =20

=20

Thanks, everyone, for your patience!

=20

Terry Smith, '59 TR3A  TS 58667

New Hampshire


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link=3D"#0563C1" vlink=3D"#954F72"><div class=3DWordSection1><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>Terry,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>You should definitely feel the suck, remember the manifold is =
cross-connected so you would have to cover both openings at the same =
time.=C2=A0=C2=A0 Have you tried shooting a little starting fluid into =
the carbs to see if it will try to start that way?=C2=A0 I know this =
sounds dumb, but is the rotor on and seated =
correctly?(BTDT)<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>Keep chasing you will find it.<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p>&nbsp;</o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>All the best,<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
>Bill<o:p></o:p></span></p><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'=
><o:p>&nbsp;</o:p></span></p><div><div =
style=3D'border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in =
0in 0in'><p class=3DMsoNormal><b><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span><=
/b><span style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> =
Triumphs [mailto:triumphs-bounces@autox.team.net] <b>On Behalf Of =
</b>TERRY SMITH<br><b>Sent:</b> Friday, May 31, 2019 3:16 =
PM<br><b>To:</b> triumphs@autox.team.net<br><b>Subject:</b> [TR] Vacuum =
Leak<o:p></o:p></span></p></div></div><p =
class=3DMsoNormal><o:p>&nbsp;</o:p></p><p><span =
style=3D'font-family:"Helvetica",sans-serif;color:#333333'>Randall was =
right.&nbsp; I did have multiple problems.&nbsp; Closer inspection of =
the ground in the distributor plate showed it was connected and tested =
fine with an ohms check, but in truth was hanging on by just a few =
threads.&nbsp; Fabricated another and now spark is exceptional out of =
the wire.&nbsp; Don't ask me how I know that but if you'd like a =
recommendation of the type screwdriver to test the wire to ground, I can =
tell you which kind NOT to =
use.&nbsp;&nbsp;<o:p></o:p></span></p><p><span =
style=3D'font-family:"Helvetica",sans-serif;color:#333333'><o:p>&nbsp;</o=
:p></span></p><p><span =
style=3D'font-family:"Helvetica",sans-serif;color:#333333'>So...the 3 =
has spark to the plugs and has fuel to the carbs.&nbsp; Engine cranks =
but won't catch.&nbsp; Rechecked float specs and they're good.&nbsp; =
Reset richness to 12 flat start-up specs.&nbsp; So good.&nbsp; Ran a =
timing light to see if it had jumped time, tested =
good.&nbsp;&nbsp;<o:p></o:p></span></p><p><span =
style=3D'font-family:"Helvetica",sans-serif;color:#333333'><o:p>&nbsp;</o=
:p></span></p><p><span =
style=3D'font-family:"Helvetica",sans-serif;color:#333333'>I'm now =
suspecting a severe enough vacuum leak to keep the gas from being sucked =
into the chambers.&nbsp; Checked valve lash, no issues.&nbsp; =
Compression test shows 90 plus in all cylinders.&nbsp; I can't see the =
intake manifold gasket on the bottom, but that's where it would be...if =
it is.&nbsp;&nbsp;<o:p></o:p></span></p><p><span =
style=3D'font-family:"Helvetica",sans-serif;color:#333333'><o:p>&nbsp;</o=
:p></span></p><p><span =
style=3D'font-family:"Helvetica",sans-serif;color:#333333'>Question:&nbsp=
; with the carbs off and using the solenoid to crank the engine, how =
much should one feel suction against ones hand at the ports of the =
intake manifold?&nbsp; I'm barely feeling any if at all.&nbsp; Certainly =
not enough to draw gas in.&nbsp;&nbsp;<o:p></o:p></span></p><p><span =
style=3D'font-family:"Helvetica",sans-serif;color:#333333'><o:p>&nbsp;</o=
:p></span></p><p><span =
style=3D'font-family:"Helvetica",sans-serif;color:#333333'>Thanks, =
everyone, for your patience!<o:p></o:p></span></p><p><span =
style=3D'font-family:"Helvetica",sans-serif;color:#333333'><o:p>&nbsp;</o=
:p></span></p><p><span =
style=3D'font-family:"Helvetica",sans-serif;color:#333333'>Terry Smith, =
'59 TR3A&nbsp; TS 58667<o:p></o:p></span></p><p><span =
style=3D'font-family:"Helvetica",sans-serif;color:#333333'>New =
Hampshire<o:p></o:p></span></p></div></body></html>
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