Considerable progress!
I took the magneto to be re-magnetised, one pole was 'zero' flux and the other nearly as bad. Restored to full health and bought a new WIPAC condenser and a fresh plug for £30.87.
Learnt the owner lives in the next big village to me and his brother is a member of the same car club as me!
All re-fitted and timed, and nothing except a Fat Spark. Must be the carb then....
Put the carb body in the ultra sonic bath for 5 hours. There is one small drilling in the venturi jet that you can't poke through, so that might be the culprit I thought.
Oddly, bought a NOS carb body of UK Ebay for £13, awaiting delivery.
Just put the carb back together and all on the engine. Nothing.
Put a slug of near petroil down the plug hole and span it over for about 10 seconds and it fired, and it ran, and it throttled (quite well).
It even re-started on it's own without the neat fuel slug and I blipped it (odd phrase for a 50cc 1.5 bhp engine...) for a good time and tested tick over which killed it.
Decided to call it a day with a few thoughts.
1
I think the very effective silencer is very choked with carbon and stifling the engine,
2
I think the carb clean is 50% done, the NOS body should be the fix.
3
Time to order all the bits to get the bike road worthy.
![Smile :)](./images/smilies/icon_smile.gif)