Bike wont start, New cylinder
 

I have an old 2008 GZ that had a bad piston and head, smoked awfully.

Changed out the piston and cylinder with a rebuild kit, all new rings, pistons and cylinder.

Problem is I cannot get it to start. I checked the valve clearance, has spark, carb was cleaned 3 times, just will not start up.

Camshaft timing should be good and lined up.

Anyone able to help me figure out what's wrong?

did it all come as a kit, or some of the parts are different? did you check the way of the piston...how it should be mounted (front/back)?