There is three things you need to get an engine to run.
FUEL, AIR, HEAT.

Prime the engine, remove the plug and make sure that it is wet.
If not, no fuel, figure out why.

If plug is wet, connect igniter to make sure that coil in glow plug glows.
If not, no heat.

With plug removed, and engine inverted, prime until fuel comes out of the plug hole.
Install plug, attach igniter and start!