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Re: [Mgs] No Go Mystery

To: mgs@autox.team.net
Subject: Re: [Mgs] No Go Mystery
From: Jim Tinkham via Mgs <mgs@autox.team.net>
Date: Wed, 4 May 2016 08:42:26 -0400
Delivered-to: mharc@autox.team.net
Delivered-to: mgs@autox.team.net
References: <5728F7B6.2080205@stclegal.com> <20160504123809.CD4872588DBD@autox.team.net>
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I like Gordie=E2=80=99s thought, I=E2=80=99ve seen coils do the same.  Some=
thing else to
look at if the coil is good is the alternator, the one on my C wasn=E2=80=
=99t
rebuilt properly and would fail at higher temps causing similar symptoms.

Tink

On Wed, May 4, 2016 at 8:25 AM, Gordie Bird via Mgs <mgs@autox.team.net>
wrote:

> I=E2=80=99ve seen the coil fail intermittently, seems fine when cold, but=
 fails
> when warm.  You have coil mounted on inner fender or bracket (like 1600),
> right?  Unlikely all plug wires would fail at same time, but,  if the coi=
l
> wire was bad=E2=80=A6
>
> Have you checked spark once coil heats up?  Weak coil possibly producing =
a
> weak or no spark when hot?
>
> Sudden failure as you describe; to me would indicate something in the
> electrics.
>
> I=E2=80=99d throw my spare coil, then condenser, then coil wire at it and=
 see what
> happens.
>
>
>
> Good luck!
>
>
>
> Gordie
>
> =E2=80=9962 MGA
>
>
>
>
>
>
>
> *From: *Robert J. Guinness via Mgs <mgs@autox.team.net>
> *Sent: *Tuesday, May 3, 2016 8:05 PM
> *To: *MG List <mgs@autox.team.net>
> *Subject: *[Mgs] No Go Mystery
>
>
>
> While on a long drive in the hinterlands of KY in my 1960 MGA with a
> 3-main 1800 MGB engine, I nearly ran out of gas after about 170 miles tha=
t
> day.  I found a gas station and refueled (the gas had alcohol and I usual=
ly
> run non-alcohol gas).  About 30 miles later, the car started to lose powe=
r
> and then quit. Figured it was a clogged fuel line, but fuel was pumping o=
ut
> of the fuel line at the rear carb and there was gas in both float bowls.
> Cleaned out both float bowls.  Had spark from the coil and to all plugs.
> Had just replaced spark plugs and gapped them to spec two days previously=
.
> Regapped points (1 year old 25D distributor). Nothing.  Sprayed starting
> fluid in the carbs.  Nothing. Locals towed me back to town. Locals played
> with wires under the bonnet at the coil as I politely batted them away.  =
As
> a last ditch effort, I advanced the timing and it caught at high revs!
> Drove a few miles, but lost power as I accelerated and stopped.  Stripped
> and reattached coil wire to harness.  Started, drove a couple of miles,
> faded, and stopped. Towed it home.  At home, it started reluctantly.  It
> drove for a couple of miles and it faded and quit. Gas  in rear carb floa=
t
> bowl but no gas at the front carb float bowl. Blew air from fuel pump bac=
k
> to gas tank with audible air flow at the gas tank.  Replaced the float bo=
wl
> needle and seat at the front carb.  Fuel pumping nicely at both front and
> rear carbs.  Have spark from the coil and to all plugs. Static timed.
> Nothing, doesn't even try to catch. I do not have a fuel filter other tha=
n
> stock sleeve in the fuel pump. No odd sounds. I am stupefied ( except for
> the possibility of clogged jets, but if so why wouldn=E2=80=99t it start =
with
> starter fluid).  If it is the coil or condensor, why am I getting spark?
> Why would advancing the timing get it to go at such high revs that one
> time, but normal timing gives you nothing at all, not even a spit? Do I
> have a cam flat spot problem? How have I angered the British engineering
> gods?  Any hints or diagnostic suggestions?  I have also posted to the MG
> experience folks
>
> --
>
> Robert Guinness
>
>
>
> _______________________________________________
>
> Mgs@autox.team.net
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>
>

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<div dir=3D"ltr">I like Gordie=E2=80=99s thought, I=E2=80=99ve seen coils d=
o the same.=C2=A0 Something else to look at if the coil is good is the alte=
rnator, the one on my C wasn=E2=80=99t rebuilt properly and would fail at h=
igher temps causing similar symptoms.<div><br></div><div>Tink</div></div><d=
iv class=3D"gmail_extra"><br><div class=3D"gmail_quote">On Wed, May 4, 2016=
 at 8:25 AM, Gordie Bird via Mgs <span dir=3D"ltr">&lt;<a href=3D"mailto:mg=
s@autox.team.net" target=3D"_blank">mgs@autox.team.net</a>&gt;</span> wrote=
:<br><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-le=
ft:1px #ccc solid;padding-left:1ex"><div lang=3D"EN-US" link=3D"blue" vlink=
=3D"#954F72"><div><p class=3D"MsoNormal">I=E2=80=99ve seen the coil fail in=
termittently, seems fine when cold, but fails when warm.=C2=A0 You have coi=
l mounted on inner fender or bracket (like 1600), right?=C2=A0 Unlikely all=
 plug wires would fail at same time, but, =C2=A0if the coil wire was bad=E2=
=80=A6</p><p class=3D"MsoNormal">Have you checked spark once coil heats up?=
=C2=A0 Weak coil possibly producing a weak or no spark when hot?</p><p clas=
s=3D"MsoNormal">Sudden failure as you describe; to me would indicate someth=
ing in the electrics.</p><p class=3D"MsoNormal">I=E2=80=99d throw my spare =
coil, then condenser, then coil wire at it and see what happens.</p><p clas=
s=3D"MsoNormal"><u></u>=C2=A0<u></u></p><p class=3D"MsoNormal">Good luck!</=
p><p class=3D"MsoNormal"><u></u>=C2=A0<u></u></p><p class=3D"MsoNormal">Gor=
die</p><p class=3D"MsoNormal">=E2=80=9962 MGA<u></u><u></u></p><p class=3D"=
MsoNormal"><u></u>=C2=A0<u></u></p><p class=3D"MsoNormal"><u></u>=C2=A0<u><=
/u></p><p class=3D"MsoNormal"><span style=3D"font-size:12.0pt;font-family:&=
quot;Times New Roman&quot;,serif"><u></u>=C2=A0<u></u></span></p><div style=
=3D"border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in"><=
p class=3D"MsoNormal" style=3D"border:none;padding:0in"><b>From: </b><a hre=
f=3D"mailto:mgs@autox.team.net"; target=3D"_blank">Robert J. Guinness via Mg=
s</a><br><b>Sent: </b>Tuesday, May 3, 2016 8:05 PM<br><b>To: </b><a href=3D=
"mailto:mgs@autox.team.net"; target=3D"_blank">MG List</a><br><b>Subject: </=
b>[Mgs] No Go Mystery</p></div><span class=3D""><p class=3D"MsoNormal"><spa=
n style=3D"font-size:12.0pt;font-family:&quot;Times New Roman&quot;,serif">=
<u></u>=C2=A0<u></u></span></p><p class=3D"MsoNormal"><span style=3D"font-s=
ize:12.0pt;font-family:&quot;Times New Roman&quot;,serif">While on a long d=
rive in the hinterlands of KY in my 1960 MGA with a 3-main 1800 MGB engine,=
 I nearly ran out of gas after about 170 miles that day.=C2=A0 I found a ga=
s station and refueled (the gas had alcohol and I usually run non-alcohol g=
as).=C2=A0 About 30 miles later, the car started to lose power and then qui=
t. Figured it was a clogged fuel line, but fuel was pumping out of the fuel=
 line at the rear carb and there was gas in both float bowls. Cleaned out b=
oth float bowls.=C2=A0 Had spark from the coil and to all plugs.=C2=A0 Had =
just replaced spark plugs and gapped them to spec two days previously. Rega=
pped points (1 year old 25D distributor). Nothing.=C2=A0 Sprayed starting f=
luid in the carbs.=C2=A0 Nothing. Locals towed me back to town. Locals play=
ed with wires under the bonnet at the coil as I politely batted them away.=
=C2=A0 As a last ditch effort, I advanced the timing and it caught at high =
revs!=C2=A0 Drove a few miles, but lost power as I accelerated and stopped.=
=C2=A0 Stripped and reattached coil wire to harness.=C2=A0 Started, drove a=
 couple of miles, faded, and stopped. Towed it home.=C2=A0 At home, it star=
ted reluctantly.=C2=A0 It drove for a couple of miles and it faded and quit=
. Gas=C2=A0 in rear carb float bowl but no gas at the front carb float bowl=
. Blew air from fuel pump back to gas tank with audible air flow at the gas=
 tank.=C2=A0 Replaced the float bowl needle and seat at the front carb.=C2=
=A0 Fuel pumping nicely at both front and rear carbs.=C2=A0 Have spark from=
 the coil and to all plugs. Static timed.=C2=A0 Nothing, doesn&#39;t even t=
ry to catch. I do not have a fuel filter other than stock sleeve in the fue=
l pump. No odd sounds. I am stupefied ( except for the possibility of clogg=
ed jets, but if so why wouldn=E2=80=99t it start with starter fluid).=C2=A0=
 If it is the coil or condensor, why am I getting spark?=C2=A0 Why would ad=
vancing the timing get it to go at such high revs that one time, but normal=
 timing gives you nothing at all, not even a spit? Do I have a cam flat spo=
t problem? How have I angered the British engineering gods?=C2=A0 Any hints=
 or diagnostic suggestions?=C2=A0 I have also posted to the MG experience f=
olks</span><span style=3D"font-size:12.0pt;font-family:&quot;Times New Roma=
n&quot;,serif"><u></u><u></u></span></p><div><p class=3D"MsoNormal"><span s=
tyle=3D"font-size:12.0pt;font-family:&quot;Times New Roman&quot;,serif">-- =
<br><br><u></u><u></u></span></p></div><p class=3D"MsoNormal" style=3D"marg=
in-bottom:12.0pt">Robert Guinness</p><p class=3D"MsoNormal"><span style=3D"=
font-family:&quot;Times New Roman&quot;,serif;color:black"><u></u>=C2=A0<u>=
</u></span></p></span></div></div><br>_____________________________________=
__________<br>
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<br></blockquote></div><br></div>

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