1988 1.9 HO Issues

We are building a dirt track race car out of an '88 Escort GT with the 1.9 Ho 5 speed. We are having some major problems with the fuel injectors not doing their job. We have 40 psi of pressure behind them, they are new injectors but it just doesnt flow into the chamber. All of the obvious plugs are connected but there is just something else (probably small) hindering the car from starting. Any help would be great.