Subject: [Mgs] MGB not (re)starting

From: Steve Shoyer via Mgs <[email-masked]>
Date: Tue, 10 Mar 2020 13:46:18 -0400 (EDT)

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   It was in the 70's yesterday, so I took my 1980 MGB out for a ride.&nbsp; My current carb is a Weber 38 DGES that I installed when I replaced the cam two years ago.&nbsp; I drove around last year and it was running well, until one day when I stopped at a store for a few minutes and then couldn't get the car restarted.&nbsp; After trying to get it going I wound up calling my daughter for help and we got it push-started.&nbsp; Yesterday the same thing happened.&nbsp; After the push start the car ran fine, but I just drove it home rather than risk another problem.&nbsp; I was trying some starter fluid to get it going yesterday, but that didn't work.&nbsp; I thought that maybe the gas in the tank is old, but the car started up after a little cranking when I originally left the house.
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   Any suggestions on where to look?&nbsp; I didn't plumb the coolant line through the manifold to heat it, but I don't drive too much in cold weather so I didn't think it would be needed.&nbsp; I thought that the problem last summer could have been vapor lock, but starter fluid should have worked if that was the issue.
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   Thanks.
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   --Steve (1980 MGB)
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From: Hans Duinhoven via Mgs <[email-masked]>
Date: Tue, 17 Mar 2020 22:17:10 +0100

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Depends how the trickle chargers work.

Being from 1974 on in IT I still learn every day.

So I Did today as well. The last 30 years I=E2=80=99m specialized in enterp=
rise data storage solutions.

One of my customers was suffering of a nasty problem: a failing battery.

The battery is used in the storage controller to back-up the write cache me=
mory, if there is a power failure.

Now the problem was more about faulty firmware in the storage controller, s=
o the support engineer explained to me how the battery charging is controll=
ed in such a storage system. 

Most trickle chargers act like an on/off switching power supply with a 50% =
duty cycle.

That is because it is cheap to make.

The storage system I write about is over 5 years old and all the time it is=
 charging the battery.

So one would expect, that the battery might fail much more often that after=
 that period than a few per hundreds of systems.

The reason for this is, that the charging power supply is computer controll=
ed.

The charging period is normally on for a short period every 10 minutes or s=
o.

So when the charging is well controlled, batteries will last very long.

Also quality of all components in the entire circuit determine how long the=
 products will life.

An nice example was the battery in my Audi A6 I used as a daily driver from=
 2003 - 2007 (Built August 2000).

The car still had its first battery when the car was taken back to the comp=
any.

The odometer read 343,000 Km. The battery never failed, not did the chargin=
g circuit.

The modern trickle chargers will act like Barrie described. 

Cheers,

Hans

Van: Mgs [mailto:[email-masked]] Namens PaulHunt73 via Mgs
Verzonden: woensdag 11 maart 2020 15:56
Aan: Barrie Robinson; [email-masked]
Onderwerp: Re: [Mgs] MGB not (re)starting

Maintenance and conditioning chargers (as opposed to 'trickle' chargers) sh=
ould do - until they go faulty.  But even if you consider that a very low r=
isk it's a bad idea to leave them on all the time for the reasons I gave ea=
rlier.  If they need to be for a car to start, then there is a problem that=
 should be fixed, not worked-round.

----- Original Message ----- 

Hello, hello.   I thought these new and improved battery chargers did not '=
over charge' and cuts out when battery is charged.  Am I being duped by the=
 battery charging people ?   My 'automatic' charger has been on all winter =
and will remain so until it is broom broom time.

-- 
Dit e-mailbericht is gecontroleerd op virussen met Avast antivirussoftware.=

https://www.avast.com/antivirus

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</o:shapelayout></xml><![endif]--></head><body bgcolor=3Dwhite lang=3DNL li=
nk=3Dblue vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><sp=
an lang=3DEN-US style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif=
";color:#1F497D'>Depends how the trickle chargers work.<o:p></o:p></span></=
p><p class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:11.0pt;font-fa=
mily:"Calibri","sans-serif";color:#1F497D'>Being from 1974 on in IT I still=
 learn every day.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN=
-US style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F4=
97D'>So I Did today as well. The last 30 years I=E2=80=99m specialized in e=
nterprise data storage solutions.<o:p></o:p></span></p><p class=3DMsoNormal=
><span lang=3DEN-US style=3D'font-size:11.0pt;font-family:"Calibri","sans-s=
erif";color:#1F497D'>One of my customers was suffering of a nasty problem: =
a failing battery.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DE=
N-US style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F=
497D'>The battery is used in the storage controller to back-up the write ca=
che memory, if there is a power failure.<o:p></o:p></span></p><p class=3DMs=
oNormal><span lang=3DEN-US style=3D'font-size:11.0pt;font-family:"Calibri",=
"sans-serif";color:#1F497D'>Now the problem was more about faulty firmware =
in the storage controller, so the support engineer explained to me how the =
battery charging is controlled in such a storage system. <o:p></o:p></span>=
</p><p class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:11.0pt;font-=
family:"Calibri","sans-serif";color:#1F497D'>Most trickle chargers act like=
 an on/off switching power supply with a 50% duty cycle.<o:p></o:p></span><=
/p><p class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:11.0pt;font-f=
amily:"Calibri","sans-serif";color:#1F497D'>That is because it is cheap to =
make.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US style=3D=
'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>The sto=
rage system I write about is over 5 years old and all the time it is chargi=
ng the battery.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-U=
S style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497=
D'>So one would expect, that the battery might fail much more often that af=
ter that period than a few per hundreds of systems.<o:p></o:p></span></p><p=
 class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:11.0pt;font-family=
:"Calibri","sans-serif";color:#1F497D'>The reason for this is, that the cha=
rging power supply is computer controlled.<o:p></o:p></span></p><p class=3D=
MsoNormal><span lang=3DEN-US style=3D'font-size:11.0pt;font-family:"Calibri=
","sans-serif";color:#1F497D'>The charging period is normally on for a shor=
t period every 10 minutes or so.<o:p></o:p></span></p><p class=3DMsoNormal>=
<span lang=3DEN-US style=3D'font-size:11.0pt;font-family:"Calibri","sans-se=
rif";color:#1F497D'>So when the charging is well controlled, batteries will=
 last very long.<o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-=
US style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F49=
7D'>Also quality of all components in the entire circuit determine how long=
 the products will life.<o:p></o:p></span></p><p class=3DMsoNormal><span la=
ng=3DEN-US style=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";col=
or:#1F497D'>An nice example was the battery in my Audi A6 I used as a daily=
 driver from 2003 - 2007 (Built August 2000).<o:p></o:p></span></p><p class=
=3DMsoNormal><span lang=3DEN-US style=3D'font-size:11.0pt;font-family:"Cali=
bri","sans-serif";color:#1F497D'>The car still had its first battery when t=
he car was taken back to the company.<o:p></o:p></span></p><p class=3DMsoNo=
rmal><span lang=3DEN-US style=3D'font-size:11.0pt;font-family:"Calibri","sa=
ns-serif";color:#1F497D'>The odometer read 343,000 Km. The battery never fa=
iled, not did the charging circuit.<o:p></o:p></span></p><p class=3DMsoNorm=
al><span lang=3DEN-US style=3D'font-size:11.0pt;font-family:"Calibri","sans=
-serif";color:#1F497D'>The modern trickle chargers will act like Barrie des=
cribed. <o:p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US style=
=3D'font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p=
>&nbsp;</o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US style=3D'fo=
nt-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Cheers,<o:=
p></o:p></span></p><p class=3DMsoNormal><span lang=3DEN-US style=3D'font-si=
ze:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Hans<o:p></o:p>=
</span></p><p class=3DMsoNormal><span lang=3DEN-US style=3D'font-size:11.0p=
t;font-family:"Calibri","sans-serif";color:#1F497D'><o:p>&nbsp;</o:p></span=
></p><div><div style=3D'border:none;border-top:solid #B5C4DF 1.0pt;padding:=
3.0pt 0cm 0cm 0cm'><p class=3DMsoNormal><b><span style=3D'font-size:10.0pt;=
font-family:"Tahoma","sans-serif"'>Van:</span></b><span style=3D'font-size:=
10.0pt;font-family:"Tahoma","sans-serif"'> Mgs [mailto:[email-masked]=
am.net] <b>Namens </b>PaulHunt73 via Mgs<br><b>Verzonden:</b> woensdag 11 m=
aart 2020 15:56<br><b>Aan:</b> Barrie Robinson; [email-masked]<br><b>On=
derwerp:</b> Re: [Mgs] MGB not (re)starting<o:p></o:p></span></p></div></di=
v><p class=3DMsoNormal><o:p>&nbsp;</o:p></p><div><p class=3DMsoNormal><span=
 style=3D'font-size:10.0pt'>Maintenance&nbsp;and conditioning chargers (as =
opposed to 'trickle' chargers) should do - until they go faulty.&nbsp; But =
even if you consider that a very low risk it's a bad idea to leave them on =
all the time for the reasons I gave earlier.&nbsp; If they need to be for&n=
bsp;a car to start, then there is a problem that should be fixed, not worke=
d-round.</span><o:p></o:p></p></div><blockquote style=3D'border:none;border=
-left:solid black 1.5pt;padding:0cm 0cm 0cm 4.0pt;margin-left:3.75pt;margin=
-top:5.0pt;margin-right:0cm;margin-bottom:5.0pt'><div><p class=3DMsoNormal>=
<span style=3D'font-size:10.0pt;font-family:"Arial","sans-serif"'>----- Ori=
ginal Message ----- <o:p></o:p></span></p></div><div><p class=3DMsoNormal><=
o:p>&nbsp;</o:p></p></div><p class=3DMsoNormal><span style=3D'font-size:10.=
0pt;font-family:"Arial","sans-serif"'>Hello, hello.&nbsp;&nbsp; I thought t=
hese new and improved battery chargers did not 'over charge' and cuts out w=
hen battery is charged.&nbsp; Am I being duped by the battery charging peop=
le ?&nbsp;&nbsp; My 'automatic' charger has been on all winter and will rem=
ain so until it is broom broom time.</span><o:p></o:p></p></blockquote></di=
v><div id=3D"DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br /> <table style=3D"b=
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