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Loosen the linkage between the carbs so they work indepently. The slow =
the idle speed down on the front carb and bring the rear one up until =
they are equal.=20
If that will not fix it then if you removed the throttle plates they =
were not set correctly and you will need to remove the carbs to re set =
the throttle plate with the idle screw backed off. Make sure the the =
plates are sealing off completely. If not loosen the shaft screws and =
move the plate until they almost completely seal all the way around.
David Nock
healeydoc@sbcglobal.net
209 948 8767
www.britishcarspecialists.com
Help us have our Founder Norman Nock inducteed into the=20
British Sportscar Hall of Fame, You can vote for your favorites=20
by visiting the site at.
www.britishsportscarhalloffame.org
From: Michel Murphy=20
Sent: Thursday, June 27, 2019 4:32 PM
To: Healey List=20
Subject: [Healeys] Carburettor help
Hi everyone,=20
I am at the point where I'm trying to tune my carburetters for my BJ7. =
The engine was rebuilt along with the carbs. I set up the carbs as per =
the SU workshop manual to pre-tuning setting: throttle screw backed off, =
turned jet adjusting nut/screw down two turns and turn the fast-idle =
adjusting screw until they are well clear of the cam.=20
The car starts well enough without choke engaged, but the engine idles =
at 2000 RPM even after left running for 5-10 minutes. The rear carb =
doesn't seem to have any suction unlike the front carb (I put my hand in =
front of the carb for this test). Any ideas why the rear carb does not =
have any noticeable suction? I suspect the high idle is due to rear carb =
not functioning properly.
Any help would be appreciated.
Regards,
Mike
'63 BJ7
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Archive: http://www.team.net/pipermail/healeys =
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<BODY dir=3Dltr>
<DIV dir=3Dltr>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR: #000000">
<DIV>Loosen the linkage between the carbs so they work indepently. The =
slow the=20
idle speed down on the front carb and bring the rear one up until they =
are=20
equal. </DIV>
<DIV>If that will not fix it then if you removed the throttle plates =
they were=20
not set correctly and you will need to remove the carbs to re set the =
throttle=20
plate with the idle screw backed off. Make sure the the plates are =
sealing off=20
completely. If not loosen the shaft screws and move the plate until they =
almost=20
completely seal all the way around.</DIV>
<DIV> </DIV>
<DIV> </DIV>
<DIV style=3D"FONT-SIZE: 12pt; FONT-FAMILY: 'Century'; COLOR: =
#000000">David=20
Nock<BR>healeydoc@sbcglobal.net<BR>209 948=20
8767<BR>www.britishcarspecialists.com<BR><BR>Help us have our Founder =
Norman=20
Nock inducteed into the <BR>British Sportscar Hall of Fame, You can vote =
for=20
your favorites <BR>by visiting the site=20
at.<BR>www.britishsportscarhalloffame.org<BR></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV style=3D"FONT: 10pt tahoma">
<DIV> </DIV>
<DIV style=3D"BACKGROUND: #f5f5f5">
<DIV style=3D"font-color: black"><B>From:</B> <A =
title=3Dmichel.murphy@gmail.com=20
href=3D"mailto:michel.murphy@gmail.com";>Michel Murphy</A> </DIV>
<DIV><B>Sent:</B> Thursday, June 27, 2019 4:32 PM</DIV>
<DIV><B>To:</B> <A title=3Dhealeys@autox.team.net=20
href=3D"mailto:healeys@autox.team.net";>Healey List</A> </DIV>
<DIV><B>Subject:</B> [Healeys] Carburettor help</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV=20
style=3D'FONT-SIZE: small; TEXT-DECORATION: none; FONT-FAMILY: =
"Calibri"; FONT-WEIGHT: normal; COLOR: #000000; FONT-STYLE: normal; =
DISPLAY: inline'>
<DIV dir=3Dltr>Hi everyone,=20
<DIV> </DIV>
<DIV>I am at the point where I'm trying to tune my carburetters for my=20
BJ7. The engine was rebuilt along with the carbs. I set up the =
carbs as=20
per the SU workshop manual to pre-tuning setting: throttle screw backed =
off,=20
turned jet adjusting nut/screw down two turns and turn the fast-idle =
adjusting=20
screw until they are well clear of the cam. </DIV>
<DIV> </DIV>
<DIV>The car starts well enough without choke engaged, but the engine =
idles at=20
2000 RPM even after left running for 5-10 minutes. The rear carb doesn't =
seem to=20
have any suction unlike the front carb (I put my hand in front of the =
carb for=20
this test). Any ideas why the rear carb does not have any noticeable =
suction? I=20
suspect the high idle is due to rear carb not functioning =
properly.</DIV>
<DIV> </DIV>
<DIV>Any help would be appreciated.</DIV>
<DIV> </DIV>
<DIV>Regards,</DIV>
<DIV>Mike</DIV>
<DIV>'63 BJ7</DIV></DIV>
<P>
<HR>
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