NEED HELP calling all experts!! 4stroke not running right

[ThatDippyTwat]

[mentalboy]

Agreed, something as simple as a failing HT lead can give the appearance of a good spark but play havoc with the way your lump runs, or doesn't.
Healthy engines, for all the gizmos attached to them, are fairly simple beasts - too much air, too much fuel (goes without saying lack of one will affect other) or something affecting spark.
If you really have an uncompromised air/fuel delivery system with a good air cleaner and a carb that is set up correctly you are left with electrics. My gut says that if it can handle a load but only if you sneak up on it then something is on it's way out.
Start with LT and HT connections and make sure there isn't any damp in them, if necessary remove HT lead and stick it in the airing cupboard overnight/ through the work day to make sure there is no damp in it,...
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Make mine a Corona.

[Sam12345]

Sorry lads forgot to mention i fixed the issue a few weeks back, was the coil breaking down under load thanks for the help!
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Sa

[jameswilson]

If you still need help, then there's a lof of great info about best balance bikes for toddlers at https://bikesist.com/best-balance-bikes-for-toddlers/. I really hope, that it will help you in the long run. Let's hope so.