Most electronic ignitions provide a stronger spark and need at least a 3
Ohm resistance from the coil plus resistor at all times. During start up
the resistor is shorted to increase the voltage on the standard ignition
to provide a stronger spark as the voltage will drop due to the strong
current and the resistance will drop to about 1,5 Ohm. This may cause
the electronic ignition to overheat and possibly burn out.
Vulnarable are the Pertronics and Lumenition systems. Perhaps also others.
Because of the stronger spark the electronic ignition is providing this
shorting of the resistor is not neccesary anymore.
The remedy is simple, just disconnect the small white/yellow wire at the
starter motor relay. This will leave the resistor in function at all times.
Kees Oudesluijs
James Lea schreef:
> We fired up the Healey for the first time this year yesterday. I drove
> two blocks and she died. After checking everything I could think of I
> have decided that the problem is the Petronics ignition. I have heard
> that they can cause problems and several of my LBC friends have gone
> back to standard points. My question is when the fail, do they
> normally go all at once? This time the car just died and I could get
> nothing more after that. Thanks, JL
>
> James Lea
> PO Box 25
> Rockport Maine 04856
> 1-207-236-3632
>
> 1951 Triumph Renown
> 1952 MG TD
> 1952 Triumph Mayflower
> 1958 Rover P4
> 1962 Austin Healey BT7
> 1980 Commuta-car Electric _______________________________________________
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