Villiiers coil test

[headcase]

Hi from an old member returning,
You've probably been asked this many times before so apologies, but I have several old coils here and all have different resistance readings.
The only thing they have in common is no spark!
Any thoughts please?
Thanks

[Keith.P]

I would have thought that a reading on the secondary coil winding would at least give you something.
By the way, you are posting in the for sale section.

[electrosys]

Maybe the mods could move this post across ?

I've just tested a known good Villiers coil - returns 3.4 K Ohms on the secondary. So something around that figure should be good.

If your coil measures something similar - it'll be worth checking the points for a good contact/ check the condenser isn't shorted-out/ check the HT lead for continuity ... and finally check the magnets - they can lose their strength over time if not used. Spinning the flywheel with a drill (with the plug out) usually does the trick.

[Charles uk]

Is that the engine driver, if it is, welcome back.

I've never yet come across a Seagull flywheel that couldn't generate a spark through loss of it's magnetism, usually it's the points that need cleaning, coils that have passed their best before date, wiring that no longer goes where it's meant to & deceased condensors, in that order.

Fit a new HT lead it costs less than 50p for 13" of copper cored spark plug cable.

If you can't start your Seagull without the use of an electric drill then you haven't repaired the magneto, very few of us have a drill with us when boating.