I assume you read this post from above?.
"It may also be a bad capacitor. We see that problem often. Most multimeters has a capacitance function. Make sure you unhook the capacitor prior to checking its capacitance. You probably have a 15uF capacitor. Or take the one off the running pump and put it on the non-running pump and see if it starts working."
I found out that you can get capacitors on eBay for reasonable to low cost. A 'handy fixit man' told me you do not need a perfectly matched capacitor for most motors. Not sure if it is true, but the ill matched capacitor he loaned be worked okay until I received one from an eBay seller.
