check out ic piping as said, and all vacuum lines first it would be cheapest.
cant remember but i think there is filters on the injectors themselves, an idea but its easier to check them than the tank.
and if all else fails check out fuel lines and pump, there is a way to test fuel pump with the diagnostic box.
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1984 supra - 1uzfe - w58 - 4.10 - 1 piece aluminum shaft.
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