I am replacing my gy6 head and I was wondering if the color of these valves "tells a story" regarding mixture or any other health stats? I just assumed though both valves would closer in color but I guess it makes sense exhaust would be dryer\hotter?
Right I am uni oiled filter, stock jetting and the plug is totally fouled but power was OK. I tried upjetting and is bogged horible.
Does the coloring you see mean anything? I am on the fence about replacing piston and rings. I
assumed my terrible blueish smoke was due to bad rings but maybe it was because the exhaust totally broke off duh.. 
