why does my injetor fuse keeps blowing when i turn the key over

You most likely have a short on the positive side of the power to at least one of the injectors. Do you have a mouse problem? They like to sit on top of engines and chew on the wires.

no i dont have a mouse problom. but u think its a short is there any other problems that would blow my injector fuse blow

Should have mentioned before, you could have a bad injector as well. You can take an ohm meter and ohm it out. Just compare the reading you get to another injector. They should be very close