Trane XE-90 problem
 

My Trane furnace XE-90 many times will not start. I go check it and the motor for the induced draft exaust fan is humming and hot to the touch, but not spinning. If I tap it with a light to moderate blow with the back of a srewdriver the motor starts running. I have lubed the bearing in the indicated shaft location and it still does it. The shaft of the motor spins freely and is not binding.
A friend said it might be the starting capacitor. There is a 4UF capacitor on top of the motor with spade lugs. Does the capacitor sound like the problem? and if so are they readily available.
Thanks for any input...... gsetti

Actually, it sounds like the motor is bad. Test the capacitor and replace as necessary. Not all motors come w/a capacitor but, this would be the cheaper of the two if you need to guess at the solution.