Welcome to the forums.
What do you mean by "it tries to start"? Did you have the key on and jump the two posts on the solenoid with an old screwdriver or something? I can't understand if you're saying the engine turns over but don't start or if you mean that it will actually start by jumping the solenoid. Remember, if the key is off, the engine should turn over but not start when jumping the solenoid. If the key is on, the engine should start when jumping the solenoid.I also found that if you take a screwdriver and touch the top post of the solenoid it tries to start which it attempted to.