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Re: [Mgs] 1978 MGB

To: "dave" <dave@ranteer.com>, <mgs@autox.team.net>
Subject: Re: [Mgs] 1978 MGB
From: PaulHunt73 via Mgs <mgs@autox.team.net>
Date: Sat, 8 Jun 2019 10:07:04 +0100 s28MsdoT1YuRxzqBm5hMS9+Vd7Rm6/13cpzHtQQnA+fZhjJ58Ai22s2Xswr78lgQ9L1Zb/dWt68hTg==
Delivered-to: mharc@autox.team.net
Delivered-to: mgs@autox.team.net
References: <001901d51d82$9408b410$bc1a1c30$@ranteer.com>
This is a multi-part message in MIME format.

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If the plugs aren't fouled then I doubt it is the choke stuck open, but =
you could check that with a Colortune in from cold.  It could still be =
the choke though in that when that warms and removes the fast idle the =
normal idle screw is not open enough to maintain the engine.  Are you =
warm starting giving it a little throttle with the pedal?  Or just =
cranking feet off?  IME they need a little throttle when warm, but not =
cold when the choke is activated.

When it is left to get cold and you turn on the ignition again and it =
starts, does the fuel pump chatter away or just click a couple of times =
- that's if you have an SU or equivalent pump?

"no gas pouring into carb" do you mean no gas is pouring out of the carb =
overflow?  When it won't restart switch off and take the fuel delivery =
pipe off the carb and you should get a spurt of fuel.  If not direct the =
pipe into a container and switch on again, and you should get at least =
one Imperial pint per minute and in practice double that, in a =
continuous series of pulses with minimal bubbling.

PaulH.
  ----- Original Message -----=20
  =20
  Starts when cold, no problem.  runs at 2500 to 3000 rpm no problem.

  =20

  Let it go down to 1000 or so and it dies.  Will not restart.

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<DIV><FONT size=3D2>If the plugs aren't fouled then I doubt it is the =
choke stuck=20
open, but you could check that with a Colortune in from cold.&nbsp; It =
could=20
still be the choke though in that when that warms and removes the fast =
idle the=20
normal idle screw is not open enough to maintain the =
engine.&nbsp;&nbsp;Are you=20
warm starting giving it a little throttle&nbsp;with the pedal?&nbsp; Or =
just=20
cranking feet off?&nbsp; IME they need a little throttle when warm, but =
not cold=20
when the choke is activated.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>When it is left to get cold and you turn on the =
ignition again=20
and it starts, does the fuel pump chatter away or just click a couple of =
times -=20
that's if you have an SU or equivalent pump?</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>"no gas pouring into carb" do you mean no gas is =
pouring out=20
of the carb overflow?&nbsp; When it won't restart switch off and take =
the fuel=20
delivery pipe off the carb and you should get a spurt of fuel.&nbsp; If =
not=20
direct the pipe into a container and switch on again, and you should get =
at=20
least one Imperial pint per minute and in practice double that, in a =
continuous=20
series of pulses with&nbsp;minimal bubbling.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>PaulH.</FONT></DIV>
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  <P class=3DMsoNormal>Starts when cold, no problem.&nbsp; runs at 2500 =
to 3000=20
  rpm no problem.<o:p></o:p></P>
  <P class=3DMsoNormal><o:p>&nbsp;</o:p></P>
  <P class=3DMsoNormal>Let it go down to 1000 or so and it dies.&nbsp; =
Will not=20
  restart.<o:p></o:p></P></DIV></BLOCKQUOTE></BODY></HTML>

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