How do I put my car back into timing?

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My car wont start, its getting fuel you can hear the starter doing its thing when I tested the spark plug wire by putting a screw driver in it and had someone start car it had a yellow spark the rotor in the distributer is sitting at #2 instead of #1 and i believe the firing order is 1342 so my only gues is that it has slipped timing. All help is appriciated thank you