Ok guys needs some help asap ready to set this thing on fire..thing would never start valves were tight i adjusted the calves to correct shims on intake n exhaust have plenty of clearance in between cam lobes n shims..problem is i done set tdc about 10 times now its dead on..will not fire one hiccup sprayed gas into carb while cranking n while not all it does is make a loud backfire n some flames come out. Its like valves are tight but there not.idk how it could be firing wrong with it at tdc. I need help asap carn is clean have plenty of spark bright blue.

 

Have you checked to see if the timing is off?

 

Timing is dead on.thats wjy im confused not sure what is going on

 

I have cams top dead center rechecked 5 times re set about 8 times. You mean timing as far as flywheel?

 

Have you checked to see if the spark is hot enough and what color is it? Should be a bluish color.

 

Yes have bright blue spark on each coils. Plugs are dry even when i spray gas through intake.

 

And its backfiring out of the carb? just like a loud pop?

 

Yes only when i spray gas through intake. With carbed hooked up i dont get no pop or anything.

 

Have you checked the cleanliness of the carb?

 

Yes i cleaned all jets and i have proper gas flow from tank to carb but its either not entering engine or timimg is off somewhere.plugs are dry n still brand new not a hint of gas on them.