Starting/accelleration problems

I've got a 94 Toyota Camry LE, 2.2 motor. It won't start without manually choking it @ the EFI injection when it's cold. And when it's running, if you give it too much gas (especially if going uphill), it tries to (and sometimes does) die. We've had 3 mechanics look at it - none have done any testing really, except for timing (which is right on) but they're kind of stumped.



We've replaced the fuel filter, fuel pump, spark module, & checked the timing. Any other ideas?