hello my son and i have recently restored an 82 fl250 and we are having running issues .the machine will not rev up and spits fuel back from the carb the engine is a fresh rebuild with a carb overhaul we have done lots to it with no success here's a list
new fuel pump
cleaned out exhaust ,100 percent sure its not plugged
new coil and wire new plug
new fuel filter
rebuilt wiring harness
new magneto
everything is new except the cdi and flywheel
i have tried gravity feeding fuel ,restricting fuel ,restricting air
i even hooked a 2 cycle timing light on it and made a mark at tdc but when i started it the mark lights on the bottom of the engine not at the top where i made a mark?
every one i ask says cdi's either work or don't ,they don't change timing any advice would be great my son is dying to ride it
thanks