I just did an engine swap on my '94 MX-6. Ever since the change, all injectors are failing to open. Fuel is getting as far as the fuel rail, but that's it. I know the motor AND injectors are both good as they were donated from a '93 that I had been driving up until that point. I've changed the ECU (twice), checked or replaced every fuse I could find, ran diagnostics, and tried everything else I can think of and still, nothing. What could be causing all of the injecors to not work at the same time?