The perennial “won’t start” problem

[Wylieboy]

My B. Previous owner said it ran when he parked it in a field a few years ago. Wouldn’t start for me, so here we go. Has new battery, cables, points, condenser, magneto winding and core, plug wires, blue spark all cylinders. The magneto snaps briskly as #1 hits TDC, and rotor points to #1 plug wire. At #1 TDC, the flywheel timing mark is at 6 o’clock. New fuel line, gas bowl, rebuilt (by me) carb. When I remove the plug on the intake manifold, it has suction when cranking the engine, and clearly has gas at least that far. One valve was stuck open, but a gentle tap freed it, and now all move properly. I’m not sure what to check next! Any suggestions?

[Cub-Bud]

Did you take the magneto completely apart

Did you static time the magneto as instructed in the service manual

Are the plug wires in the correct firing order