My pre-ignition motor clicks on but will not spin. The motor spins freely by hand. Not hanging up on anything. Is the motor bad? Can I fix it myself by taking the motor apart? Could it be brushes in the motor?

Please help.

Thank you!

I do not believe you will have much success fixing the motor. What you need to do first is to make sure the motor is getting voltage so it can run.

Sorry,
The motor will work for a bit if I hit it with my hand but will not start on it's own.

Check to see if it has a capacitor. There are pictures of capacitors for larger motors in the sticky at
https://www.askmehelpdesk.com/heating-air-conditioning/heating-cooling-maintenance-repair-troubleshooting-frequently-asked-questions-58313.html

A bad capacitor is a frequent cause of a motor not starting. If you have an ohm meter, you can do a rough check of one. Short the terminals with a plastic handled screwdriver or something, and remove one. Watch the meter as you connect the leads. The reading will jump to a high value and then climb off scale for a good one. If it is bad, you can note the info on it, but might better take it out and to a electrical or HVAC supply and let them match it.

Motors usually have nothing inside to fix, but the capacators are a cheap, easy fix.