[Dragonwind]

Okay so if you get an initial 'launch' of the engine then it dies with no further ignitions then I'd really change the fuel filter, no matter how much pressure you think you have. When the filter is blocked it will still seam some fuel through so waiting allows pressure to build up in the rails but after the initial surge then no more gas.

Beyond that I'd say its time for a shop because you're running out of places to look.
Chris