Saving Old Seagulls

have given up ,tried everything that people have said to try and get my fortyplus working but still no joy,
when i spin it with a powerdrill and put the ht lead against the block its sparking ever so faintly but not enough to jump a gap and spark,dont know what to do now so will be buying a complete magneto and coil,points,surely then it must work ,what else could it be ,if i replace the complete ignition system that must work.
i,m not a quitter as you can see from the thread before this but it,s beat me ,i,ve done the multimeter test and it looks okay but no spark so thanks again for the advice maybe better luck next time.
frank leeds .

frank avey wrote:just built up again and still no spark,getting a reading of 4.53 down the seagull ht lead on the 20 ohm scale and to further confuse things i put a car ht lead on it to see if the seagull one was a duff and that gave a reading of 19.53 on the same scale.
any ideas,
frank.

Remember that car plug leads usually have built in resistance, I believe to reduce radio interference, and usually implemented by making them from carbon fibres. The important measurements are from the HT stud to the backplate.