Fuel not routeing
Now that you've done the above, use your garden air compressor.
1. Use a wire to dislodge any clog & Air chuck the engine carb pulse nipple.
2. Put the fuel supply line in a catch bottle, apply a small amount of psi into the return line. If fuel comes out, yer good! The carbs fuel pump can suck fuel and return it to gas tank. Open the gas cap to stop fuel flow into bottle. Cork ends, set aside for now.