I have a starting problem with my 96 Bronco 5.0L. This starting problem does not happen every time I turn the key, but when the engine is hot, it seems like the engine needs fuel. I have changed the distributor, rotor, wires, plugs, and fuel filter. I have checked the timing and it looks good. When the engine is running it runs strong and smooth with no hesitation. When the engine fails to start, a small shot of starting fluid will get it going. So my question is... What do you think should be my next step?