Check that your fuel rack is free moving and in the fully open (excess fuel) position when trying to start up. If you tap on the fuel lines slightly, it can help move any air bubbles out of the system. If you cannot get any squirt out the top of the pump, then you can pull the pump cap and remove the delivery valve. Once this is done, and you rotate the engine slowly, the fuel should flow freely through the pump when the engine is in the right position. I have fought a few of them in my day, sometimes difficult to find the rhyme or reason behind an air lock. Once the air is out, you should be good to go. A dry or sticky pump can really give trouble.
dieselgman