Safest way is with a noid light.

http://www.ebay.co.uk/itm/11PIECE-NO...item461b33402d

Plugs into the injector loom, so you can check that the injector is being told to squirt. If its not I would be looking at crank position sensor again as the coil and injectors will not do anything if the ecu is not seeing engine speed.

Do you get the fuel pump priming, is the ecu getting power?