RE: YS engine question
Dauntae,
Do try running it before sending it for service.
However, what you wrote in posts #5 and #7 does indicate there is a problem...
Fuel system problems in YS engines, don't tend to just go away...
Dru,
As to freshening up after a long idle period; the glow element in the plug is a platinum/iridium alloy...
Platinum is quite inert. It does not tend to deteriorate in storage, even in the presence of combustion residues, or raw fuel.
If an engine is not oiled before storage, it is the steel parts (bearings, mostly) that are prone to need 'freshening up'...
...And in YS engines, the fuel system components...