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[Mgs] Rough Running

To: "mg-mgb@yahoogroups.com" <mg-mgb@yahoogroups.com>, MG List <mgs@autox.team.net>
Subject: [Mgs] Rough Running
From: Dan DiBiase via Mgs <mgs@autox.team.net>
Date: Mon, 5 Sep 2016 16:08:51 +0000 (UTC)
Delivered-to: mharc@autox.team.net
Delivered-to: mgs@autox.team.net
References: <510500765.387691.1473091731807.ref@mail.yahoo.com>
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Hi - last year, my '76B (with '75 engine and single Z-S carb) died while I was 
out driving and would not restart. Once back home, I managed to get it to start 
but it runs very rough andgenerates some light smoke - not dense clouds, and 
not white (like with a head gasket leak) but stinky none-the-less. I posted a 
video here -
http://s24.photobucket.com/user/ddibiase/media/1976%20MGB%20Engine%20Work/6C2F4746-A8C6-4D19-BA08-399597F43772_zpsvgtqyk59.mp4.html

That gives a sense of idle roughness, if not the light smoke... The tach is 
steady at idle. 

I've replaced spark plugs and distributor rotor, as well as cleaned the 
contacts in the plug leads. Just installed a new electronic fuel pump as the 
old one crapped out. Lines are clearand fuel filter fills nicely. Carb was 
rebuilt about 4 years ago and before the car died on me last year, the car ran 
very well. I did open it up to check the diaphragm and floats, they are fineand 
the carb was clean inside. Car has about gas, most from last year but with 2 
gallons from today added.
I did not try to drive it as the brakes need to be bled....

I've changed jobs recently and now have time to get this car back on the road 
and need some help as to where to start....
Thx,
Dan D'76B, '65BCentral NJ USA

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<html><head></head><body><div style=3D"color:#000; background-color:#fff; f=
ont-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, =
sans-serif;font-size:13px"><div dir=3D"ltr" id=3D"yui_3_16_0_ym19_1_1473084=
091522_30828">Hi - last year, my '76B (with '75 engine and single Z-S carb)=
 died while I was out driving and would not restart. Once back home, I mana=
ged to get it to start but it runs very rough and</div><div id=3D"yui_3_16_=
0_ym19_1_1473084091522_30954" dir=3D"ltr">generates some light smoke - not =
dense clouds, and not white (like with a head gasket leak) but stinky none-=
the-less. I posted a video here -</div><div id=3D"yui_3_16_0_ym19_1_1473084=
091522_31019" dir=3D"ltr"><br></div><div id=3D"yui_3_16_0_ym19_1_1473084091=
522_30990" dir=3D"ltr"><a id=3D"yui_3_16_0_ym19_1_1473084091522_31311" href=
=3D"http://s24.photobucket.com/user/ddibiase/media/1976%20MGB%20Engine%20Wo=
rk/6C2F4746-A8C6-4D19-BA08-399597F43772_zpsvgtqyk59.mp4.html">http://s24.ph=
otobucket.com/user/ddibiase/media/1976%20MGB%20Engine%20Work/6C2F4746-A8C6-=
4D19-BA08-399597F43772_zpsvgtqyk59.mp4.html</a><br></div><div id=3D"yui_3_1=
6_0_ym19_1_1473084091522_31042" dir=3D"ltr"><br></div><div id=3D"yui_3_16_0=
_ym19_1_1473084091522_31033" dir=3D"ltr">That gives a sense of idle roughne=
ss, if not the light smoke... The tach is steady at idle. <br></div><div id=
=3D"yui_3_16_0_ym19_1_1473084091522_31114" dir=3D"ltr"><br></div><div id=3D=
"yui_3_16_0_ym19_1_1473084091522_31115" dir=3D"ltr">I've replaced spark plu=
gs and distributor rotor, as well as cleaned the contacts in the plug leads=
. Just installed a new electronic fuel pump as the old one crapped out. Lin=
es are clear</div><div id=3D"yui_3_16_0_ym19_1_1473084091522_31116" dir=3D"=
ltr">and fuel filter fills nicely. Carb was rebuilt about 4 years ago and b=
efore the car died on me last year, the car ran very well. I did open it up=
 to check the diaphragm and floats, they are fine</div><div id=3D"yui_3_16_=
0_ym19_1_1473084091522_31135" dir=3D"ltr">and the carb was clean inside. Ca=
r has about gas, most from last year but with 2 gallons from today added.</=
div><div id=3D"yui_3_16_0_ym19_1_1473084091522_31351" dir=3D"ltr"><br></div=
><div id=3D"yui_3_16_0_ym19_1_1473084091522_31369" dir=3D"ltr">I did not tr=
y to drive it as the brakes need to be bled....<br></div><div id=3D"yui_3_1=
6_0_ym19_1_1473084091522_31163" dir=3D"ltr"><br></div><div id=3D"yui_3_16_0=
_ym19_1_1473084091522_31162" dir=3D"ltr">I've changed jobs recently and now=
 have time to get this car back on the road and need some help as to where =
to start....</div><div id=3D"yui_3_16_0_ym19_1_1473084091522_31160" dir=3D"=
ltr"><br></div><div id=3D"yui_3_16_0_ym19_1_1473084091522_31161" dir=3D"ltr=
">Thx,</div><div id=3D"yui_3_16_0_ym19_1_1473084091522_31388" dir=3D"ltr"><=
br></div><div id=3D"yui_3_16_0_ym19_1_1473084091522_31247" dir=3D"ltr">Dan =
D</div><div id=3D"yui_3_16_0_ym19_1_1473084091522_31248" dir=3D"ltr">'76B, =
'65B</div><div id=3D"yui_3_16_0_ym19_1_1473084091522_31249" dir=3D"ltr">Cen=
tral NJ USA<br></div></div></body></html>
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