no spark at kick over

[hoogerbooger]

I can get a blue yellow spark by manually opening the points, but it isn't sparking when I kick it over.

battery is new and fully charged ( 6.4v without load) . Spark plug gap set at 0.6mm

The points gap looks ok  maybe a little tight ( using 0.35mm feelers).

If I slowly kick it over  the cam turns and points open and close. When I kick over with the plug resting on the head there is no spark at plug or points, but if I push open the points I get a strong spark at the plug and smaller spark at the points.

Not sure what to do now ? any suggestions as to what may be wrong

[JulianS]

I would check points condition and gap.

Also would try swapping the condenser, too much spark at points means dodgy condenser.

[hoogerbooger]

I will replace, but points look fine from inspection in-situ, certainly no sign of burning. Condenser fixing point looks a tad loose, but sleeve screw too mashed to tighten or remove it. So won't do until I have replacements.

On closer inspection I do have some spark at the plug on kicking over, but looks weak and erratic. I don't understand why it would be a strong spark when I manually part points ? but weak when kicked over ? Doesn't the  strong spark on manual opening suggest the condenser is fine ? Could it simply be too narrow a points gap ? (would just adjust to check, but can't currently !)