[Diy_efi] New TBI install in older car

Mon Jan 17 06:03:42 GMT 2005

This is a multi-part message in MIME format.

--===============16305506660092872==
Content-Type: multipart/alternative;
	boundary="----=_NextPart_000_0020_01C4FC27.66134700"

This is a multi-part message in MIME format.

------=_NextPart_000_0020_01C4FC27.66134700
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

Spark but no fuel spray....recheck fuel pressure.  Make sure it's fuel =
and not air in the lines.  IIRC, some of the frame-mounted Ford pumps =
are meant to be strictly booster-pumps, and won't create enough suction =
to actually draw fuel out of the tank.  The full-size vans and some =
trucks actually had 2 pumps, one in the tank to provide volume and one =
on the frame to provide pressure.

If fuel pressure is good, check for injector pulses.  You'll need a =
'noid light or LED because a regular test light won't turn on/off fast =
enough to see the pulses.  A DVOM will also react too slowly, although =
an analog meter may work.  If you have no injector pulse, check the =
injector ground pulse signal at the ECM.  If that's no good, check the =
tach pulse signal from the dizzy to the ECM.  This will be a =
ground-pulse signal just like the injector pulse.

If none of that turns anything up, let us know.

-J
------=_NextPart_000_0020_01C4FC27.66134700
Content-Type: text/html;
	charset="iso-8859-1"
Content-Transfer-Encoding: quoted-printable

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
charset=3Diso-8859-1">
<META content=3D"MSHTML 6.00.2900.2523" name=3DGENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=3D#ffffff>
<DIV><FONT face=3DArial size=3D2>Spark but no fuel spray....recheck fuel =

pressure.&nbsp; Make sure it's fuel and not air in the lines.&nbsp; =
IIRC, some=20
of the frame-mounted Ford pumps are meant to be strictly booster-pumps, =
and=20
won't create enough suction to actually draw fuel out of the tank.&nbsp; =
The=20
full-size vans and some trucks actually had 2 pumps, one in the tank to =
provide=20
volume and one on the frame to provide pressure.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>If fuel pressure is good, check for =
injector=20
pulses.&nbsp; You'll need a 'noid light or LED because a regular test =
light=20
won't turn on/off fast enough to see the pulses.&nbsp; A DVOM will also =
react=20
too slowly, although an analog meter may work.&nbsp; If you have no =
injector=20
pulse, check the&nbsp;injector ground pulse signal at&nbsp;the =
ECM.&nbsp; If=20
that's no&nbsp;good, check the tach pulse signal from the dizzy to the=20
ECM.&nbsp; This will be a ground-pulse signal just like the injector=20
pulse.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>If none of that turns anything up, let =
us=20
know.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT face=3DArial size=3D2>-J</FONT></DIV></BODY></HTML>

------=_NextPart_000_0020_01C4FC27.66134700--

--===============16305506660092872==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

_______________________________________________
diy_efi mailing list
diy_efi at diy-efi.org
http://lists.diy-efi.org/mailman/listinfo/diy_efi

--===============16305506660092872==--