[Mgs] Strange Starting

daybell7 at aol.com daybell7 at aol.com
Fri Jul 22 09:39:05 MDT 2011


Thanks, Paul.  The problem is on my TR6 ('73) which had a ballast resister
that I by-passed with a wire from the fuse box (white wire) to the coil (12
V).  I'll try another wire or confirm the absence of voltage at the connection
when I crank the starter.  The car does have an electronic ignition module and
I'll check the power source.

I've found that the MG experts are way better than anyone else, plus I do have
two MGs.

Thanks again,
Steve H.
68 BGT
72 B
59 Minor
73 TR6






-----Original Message-----
From: Paul Hunt <paul.hunt1 at blueyonder.co.uk>
To: mgs <mgs at autox.team.net>; daybell7 <daybell7 at aol.com>
Sent: Fri, Jul 22, 2011 10:26 am
Subject: Re: [Mgs] Strange Starting


Quite possibly the ignition switch disconnecting 12v from the white ignition
ire when you turn the key to 'crank', and only reconnecting it when you
elease the key from the crank position back towards the 'run' position.
owever this would reveal itself as the fuel gauge dropping back towards
ero while you were cranking ... assuming it works.  That would also cut
ower to the pump, so possibly the fuel level is dropping in the carb float
hambers which could cause a weak mixture.  However resolve the ignition
ssue first, then see if you still have the backfire.
Other possibilities if you have after-market electronic ignition, especially
n a rubber-bumper car, are that depending on where the power feed for the
lectronic module is taken from, the voltage could be too low during
ranking for the ignition module to fire.
So as a previous respondent has indicated, we need to know the model and
hether it is factory or has after-market mods.
PaulH.

---- Original Message -----
 My car starts at the point when I stop cranking the starter.  I can crank
 all
 day and the car won't start.  This happens whether the car is cold or
 warmed
 up.  There is also a backfire through the carbs when I stop cranking.  (I
 think the fuel mixture is lean).  Is this a voltage problem?


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