Try this;
Remove glow plug and connect to your plug battery. you are using a 1.5 volt battery( nicads are 1.25). does the filament lite up brightly? It should if battery is good and filament is not burned out.

While you have the plug out disconnect the fuel lines and motor the engine with your starter, watch out for the small copper gasket that the plug seats on it will blow out if you left it in the mount hole for the plug, this should clear out the engine if it was grossly flooded. Also note that the starter is turning the propeller counter clock wise from the front of the plane, it should be. If it is not, reverse you starter leads

Connect your fuel pump to the line that came off of the muffler pressure port, pump some fuel into the tank, you should get fuel immediately , even if tank is empty. If you do not get fuel do the same thing to the other line. If you get fuel out of the now open line, then you will need to hook them up so that the previous muffler line goes to the engine inlet. Note if the airplane stopped abruptly while moving forward the fuel pick up line (clunk) in the tank may have flipped to the front of the tank. Take a look at the tank!

Put it all back together, fuel it up, back the needle valve out a few turns and then screw it in until you just feel it stop moving, never crank it down as this may put a small grove around the needle or the seat and you will not be able to adjust the engine properly, now back the needle out 2.5 to 3 turns, Note: some engines need more or less turns! Experiment!

With the airplane held securely (in case it starts unexpedly)rotate the prop clock wise by hand until you feel resistance. Connect the glow battery and bump the spinner with the starter, (turn the starter on and then touch the spinner momentarly and remove starter), you should be able to hold the starter on the spinner if the engine turns over easily after this bump.

You did not say what kind of engine this is but a non ringed engine needs to be broken in at a high RPM to bring the operating temp up fast so the the proper expansion and seating of the piston will occur. Some folks will differ with this but 45 years exp sez it works. Run 3 to 4 tanks of fuel through the engine on the ground before you attempt to fly. Get an expirenced pilot to help before you try to fly on your own.

Seek help at a local clib if none of this works.
Good Luck and Happy Flying