[Mg-t] Ignition problem - I think!

Ted Jackson ted at the-jacksons.ca
Wed Nov 30 21:51:34 MST 2011


Try replacing the rotor. It has happened to me and one other that I know.
The rotor can develop a pin hole short. Too small to see that just route
the electricity straight to ground (earth).

Ted Jackson
On Nov 30, 2011 11:34 PM, "Douglas Ormrod" <
Douglas.Ormrod at neurological.org.nz> wrote:
>
> Hi T people
>
> Last weekend my 51 TD, which has been very reliable to date, started to
> suddenly  miss then died altogether. I suspected ignition as the pump was
> ticking away - but could not find anything obvious so got towed home.
>
> I have since cleaned and reset the points, fitted a new condenser and
> distributor cap. There is a spark on manually opening closing the points,
but
> does not seem to be a spark at the plugs - with one removed and sitting
on a
> bright spot on the engine while it turns over. Engine does not even
attempt to
> fire. All connections seem tight and the wiring was all renewed on
> restoration.
>
> The only old bit in the system is a 1973 Lucas TA12 sports coil. Should I
> suspect that? How do I test it? I can't remember  - should it be a
Ballast or
> non-Ballast type coil. I have a couple of other coils a Lucas 8C12 Ballast
> type and a HA12 fluid cooled type - and a Delco Remy 115043. Guess I
could buy
> a new one and try that - but would like to know if the coil is at fault
> first.
>
> Any other suggests for fault finding gratefully accepted.
>
> Thanks
>
> Douglas
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