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Re: [Mgs] [MG-MGB] Rough Running

To: "MG-MGB@yahoogroups.com" <MG-MGB@yahoogroups.com>
Subject: Re: [Mgs] [MG-MGB] Rough Running
From: Dan DiBiase via Mgs <mgs@autox.team.net>
Date: Mon, 5 Sep 2016 21:00:21 +0000 (UTC)
Cc: MG List <mgs@autox.team.net>
Delivered-to: mharc@autox.team.net
Delivered-to: mgs@autox.team.net
References: <510500765.387691.1473091731807.ref@mail.yahoo.com> <510500765.387691.1473091731807@mail.yahoo.com> <9626CDEB-884D-4EC4-8BF6-7270253399EB@gmail.com>
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Paul, the idea of brake fluid being pulled into the carb is interesting - h=
ow would I tell?=20

I am running the automatic water choke on the Z-S carb. I do have a manual =
choke conversion kit I was thinking of installing.
Thx, Dan


      From: "Paul Root ptroot@gmail.com [MG-MGB]" <MG-MGB@yahoogroups.com>
 To: MG-MGB <MG-MGB@yahoogroups.com>=20
Cc: MG List <mgs@autox.team.net>
 Sent: Monday, September 5, 2016 3:35 PM
 Subject: Re: [MG-MGB] Rough Running
  =20
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My first thought is that the power brake diaphragm broke and you are suckin=
g break fluid into the carb.
Plugs look really rich. =C2=A0Do you have a manual choke or the automatic w=
ater choke? That could be gummed up as well.


On Sep 5, 2016, at 11:08 AM, Dan DiBiase d_dibiase@yahoo.com [MG-MGB] <MG-M=
GB@yahoogroups.com> wrote:

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 c=
louds, and not white (like with a head gasket leak) but stinky none-the-les=
s. I posted a video here -
http://s24.photobucket.com/user/ddibiase/media/1976%20MGB%20Engine%20Work/6=
C2F4746-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.=C2=A0

I've replaced spark plugs and distributor rotor, as well as cleaned the con=
tacts in the plug leads. Just installed a new electronic fuel pump as the o=
ld one crapped out. Lines are clearand fuel filter fills nicely. Carb was r=
ebuilt about 4 years ago and before the car died on me last year, the car r=
an 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 b=
ut 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 ro=
ad and need some help as to where to start....
Thx,
Dan D'76B, '65BCentral NJ USA





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sans-serif;font-size:13px"><div id=3D"yui_3_16_0_ym19_1_1473084091522_81417=
">Paul, the idea of brake fluid being pulled into the carb is interesting -=
 how would I tell? <br></div><div id=3D"yui_3_16_0_ym19_1_1473084091522_814=
52"><br></div><div id=3D"yui_3_16_0_ym19_1_1473084091522_81453" dir=3D"ltr"=
>I am running the automatic water choke on the Z-S carb. I do have a manual=
 choke conversion kit I was thinking of installing.</div><div id=3D"yui_3_1=
6_0_ym19_1_1473084091522_81454" dir=3D"ltr"><br></div><div id=3D"yui_3_16_0=
_ym19_1_1473084091522_81456" dir=3D"ltr">Thx, Dan<br></div><div id=3D"yui_3=
_16_0_ym19_1_1473084091522_81415"><span></span></div><div id=3D"yui_3_16_0_=
ym19_1_1473084091522_81416" class=3D"qtdSeparateBR"><br><br></div><div styl=
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4091522_81461" size=3D"2" face=3D"Arial"> <hr size=3D"1"> <b><span style=3D=
"font-weight:bold;">From:</span></b> "Paul Root ptroot@gmail.com [MG-MGB]" =
&lt;MG-MGB@yahoogroups.com&gt;<br> <b><span style=3D"font-weight: bold;">To=
:</span></b> MG-MGB &lt;MG-MGB@yahoogroups.com&gt; <br><b><span style=3D"fo=
nt-weight: bold;">Cc:</span></b> MG List &lt;mgs@autox.team.net&gt;<br> <b>=
<span style=3D"font-weight: bold;">Sent:</span></b> Monday, September 5, 20=
16 3:35 PM<br> <b><span style=3D"font-weight: bold;">Subject:</span></b> Re=
: [MG-MGB] Rough Running<br> </font> </div> <div id=3D"yui_3_16_0_ym19_1_14=
73084091522_81462" class=3D"y_msg_container"><br><div id=3D"yiv6616135647">=
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<br clear=3D"none"><br clear=3D"none">




My first thought is that the power brake diaphragm broke and you are suckin=
g break fluid into the carb.<div class=3D"yiv6616135647"><br class=3D"yiv66=
16135647" clear=3D"none"></div><div id=3D"yui_3_16_0_ym19_1_1473084091522_8=
1464" class=3D"yiv6616135647">Plugs look really rich. &nbsp;Do you have a m=
anual choke or the automatic water choke? That could be gummed up as well.<=
/div><div id=3D"yui_3_16_0_ym19_1_1473084091522_81465" class=3D"yiv66161356=
47"><br class=3D"yiv6616135647" clear=3D"none"></div><div class=3D"yiv66161=
35647yqt9944009747" id=3D"yiv6616135647yqt69600"><div class=3D"yiv661613564=
7"><br class=3D"yiv6616135647" clear=3D"none"><div><blockquote class=3D"yiv=
6616135647" type=3D"cite"><div class=3D"yiv6616135647">On Sep 5, 2016, at 1=
1:08 AM, Dan DiBiase <a rel=3D"nofollow" shape=3D"rect" class=3D"yiv6616135=
647" ymailto=3D"mailto:d_dibiase@yahoo.com"; target=3D"_blank" href=3D"mailt=
o:d_dibiase@yahoo.com">d_dibiase@yahoo.com</a> [MG-MGB] &lt;<a rel=3D"nofol=
low" shape=3D"rect" class=3D"yiv6616135647" ymailto=3D"mailto:MG-MGB@yahoog=
roups.com" target=3D"_blank" href=3D"mailto:MG-MGB@yahoogroups.com";>MG-MGB@=
yahoogroups.com</a>&gt; wrote:</div><br class=3D"yiv6616135647Apple-interch=
ange-newline" clear=3D"none"><div class=3D"yiv6616135647"><div class=3D"yiv=
6616135647" id=3D"yiv6616135647ygrp-mlmsg" style=3D"font-size:13px;font-fam=
ily:Arial, helvetica, clean, sans-serif;font-style:normal;font-weight:norma=
l;letter-spacing:normal;text-indent:0px;text-transform:none;white-space:nor=
mal;word-spacing:0px;background-color:rgb(255, 255, 255);position:relative;=
"><div class=3D"yiv6616135647" id=3D"yiv6616135647ygrp-msg" style=3D"line-h=
eight:1.22em;z-index:1;"><div class=3D"yiv6616135647" id=3D"yiv6616135647yg=
rp-text" style=3D"line-height:1.22em;font-family:Georgia;"><div class=3D"yi=
v6616135647" style=3D"line-height:1.22em;margin:0px 0px 1em;"><br class=3D"=
yiv6616135647webkit-block-placeholder" clear=3D"none"></div><div class=3D"y=
iv6616135647" style=3D"line-height:1.22em;background-color:rgb(255, 255, 25=
5);font-family:HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida G=
rande', sans-serif;font-size:13px;"><div class=3D"yiv6616135647" dir=3D"ltr=
" id=3D"yiv6616135647yui_3_16_0_ym19_1_1473084091522_30828" style=3D"line-h=
eight:1.22em;">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 man=
aged to get it to start but it runs very rough and</div><div class=3D"yiv66=
16135647" dir=3D"ltr" id=3D"yiv6616135647yui_3_16_0_ym19_1_1473084091522_30=
954" style=3D"line-height:1.22em;">generates some light smoke - not dense c=
louds, and not white (like with a head gasket leak) but stinky none-the-les=
s. I posted a video here -</div><div class=3D"yiv6616135647" dir=3D"ltr" id=
=3D"yiv6616135647yui_3_16_0_ym19_1_1473084091522_31019" style=3D"line-heigh=
t:1.22em;"><br class=3D"yiv6616135647" style=3D"line-height:1.22em;" clear=
=3D"none"></div><div class=3D"yiv6616135647" dir=3D"ltr" id=3D"yiv661613564=
7yui_3_16_0_ym19_1_1473084091522_30990" style=3D"line-height:1.22em;"><a re=
l=3D"nofollow" shape=3D"rect" class=3D"yiv6616135647" id=3D"yiv6616135647yu=
i_3_16_0_ym19_1_1473084091522_31311" target=3D"_blank" href=3D"http://s24.p=
hotobucket.com/user/ddibiase/media/1976%20MGB%20Engine%20Work/6C2F4746-A8C6=
-4D19-BA08-399597F43772_zpsvgtqyk59.mp4.html" style=3D"line-height:1.22em;"=
>http://s24.photobucket.com/user/ddibiase/media/1976%20MGB%20Engine%20Work/=
6C2F4746-A8C6-4D19-BA08-399597F43772_zpsvgtqyk59.mp4.html</a><br class=3D"y=
iv6616135647" style=3D"line-height:1.22em;" clear=3D"none"></div><div class=
=3D"yiv6616135647" dir=3D"ltr" id=3D"yiv6616135647yui_3_16_0_ym19_1_1473084=
091522_31042" style=3D"line-height:1.22em;"><br class=3D"yiv6616135647" sty=
le=3D"line-height:1.22em;" clear=3D"none"></div><div class=3D"yiv6616135647=
" dir=3D"ltr" id=3D"yiv6616135647yui_3_16_0_ym19_1_1473084091522_31033" sty=
le=3D"line-height:1.22em;">That gives a sense of idle roughness, if not the=
 light smoke... The tach is steady at idle.<span class=3D"yiv6616135647Appl=
e-converted-space">&nbsp;</span><br class=3D"yiv6616135647" style=3D"line-h=
eight:1.22em;" clear=3D"none"></div><div class=3D"yiv6616135647" dir=3D"ltr=
" id=3D"yiv6616135647yui_3_16_0_ym19_1_1473084091522_31114" style=3D"line-h=
eight:1.22em;"><br class=3D"yiv6616135647" style=3D"line-height:1.22em;" cl=
ear=3D"none"></div><div class=3D"yiv6616135647" dir=3D"ltr" id=3D"yiv661613=
5647yui_3_16_0_ym19_1_1473084091522_31115" style=3D"line-height:1.22em;">I'=
ve replaced spark plugs and distributor rotor, as well as cleaned the conta=
cts in the plug leads. Just installed a new electronic fuel pump as the old=
 one crapped out. Lines are clear</div><div class=3D"yiv6616135647" dir=3D"=
ltr" id=3D"yiv6616135647yui_3_16_0_ym19_1_1473084091522_31116" style=3D"lin=
e-height:1.22em;">and fuel filter fills nicely. Carb was rebuilt about 4 ye=
ars ago and before the car died on me last year, the car ran very well. I d=
id open it up to check the diaphragm and floats, they are fine</div><div cl=
ass=3D"yiv6616135647" dir=3D"ltr" id=3D"yiv6616135647yui_3_16_0_ym19_1_1473=
084091522_31135" style=3D"line-height:1.22em;">and the carb was clean insid=
e. Car has about gas, most from last year but with 2 gallons from today add=
ed.</div><div class=3D"yiv6616135647" dir=3D"ltr" id=3D"yiv6616135647yui_3_=
16_0_ym19_1_1473084091522_31351" style=3D"line-height:1.22em;"><br class=3D=
"yiv6616135647" style=3D"line-height:1.22em;" clear=3D"none"></div><div cla=
ss=3D"yiv6616135647" dir=3D"ltr" id=3D"yiv6616135647yui_3_16_0_ym19_1_14730=
84091522_31369" style=3D"line-height:1.22em;">I did not try to drive it as =
the brakes need to be bled....<br class=3D"yiv6616135647" style=3D"line-hei=
ght:1.22em;" clear=3D"none"></div><div class=3D"yiv6616135647" dir=3D"ltr" =
id=3D"yiv6616135647yui_3_16_0_ym19_1_1473084091522_31163" style=3D"line-hei=
ght:1.22em;"><br class=3D"yiv6616135647" style=3D"line-height:1.22em;" clea=
r=3D"none"></div><div class=3D"yiv6616135647" dir=3D"ltr" id=3D"yiv66161356=
47yui_3_16_0_ym19_1_1473084091522_31162" style=3D"line-height:1.22em;">I've=
 changed jobs recently and now have time to get this car back on the road a=
nd need some help as to where to start....</div><div class=3D"yiv6616135647=
" dir=3D"ltr" id=3D"yiv6616135647yui_3_16_0_ym19_1_1473084091522_31160" sty=
le=3D"line-height:1.22em;"><br class=3D"yiv6616135647" style=3D"line-height=
:1.22em;" clear=3D"none"></div><div class=3D"yiv6616135647" dir=3D"ltr" id=
=3D"yiv6616135647yui_3_16_0_ym19_1_1473084091522_31161" style=3D"line-heigh=
t:1.22em;">Thx,</div><div class=3D"yiv6616135647" dir=3D"ltr" id=3D"yiv6616=
135647yui_3_16_0_ym19_1_1473084091522_31388" style=3D"line-height:1.22em;">=
<br class=3D"yiv6616135647" style=3D"line-height:1.22em;" clear=3D"none"></=
div><div class=3D"yiv6616135647" dir=3D"ltr" id=3D"yiv6616135647yui_3_16_0_=
ym19_1_1473084091522_31247" style=3D"line-height:1.22em;">Dan D</div><div c=
lass=3D"yiv6616135647" dir=3D"ltr" id=3D"yiv6616135647yui_3_16_0_ym19_1_147=
3084091522_31248" style=3D"line-height:1.22em;">'76B, '65B</div><div class=
=3D"yiv6616135647" dir=3D"ltr" id=3D"yiv6616135647yui_3_16_0_ym19_1_1473084=
091522_31249" style=3D"line-height:1.22em;">Central NJ USA<br class=3D"yiv6=
616135647" style=3D"line-height:1.22em;" clear=3D"none"></div></div><div cl=
ass=3D"yiv6616135647" style=3D"line-height:1.22em;margin:0px 0px 1em;"><br =
class=3D"yiv6616135647webkit-block-placeholder" clear=3D"none"></div></div>=
<div class=3D"yiv6616135647" style=3D"line-height:1.22em;color:rgb(255, 255=
, 255);min-height:0px;"></div></div></div></div></blockquote></div><br clas=
s=3D"yiv6616135647" clear=3D"none"></div></div>





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