I just got my new (rebuilt) starter for my 2.3 Pinto, and decided to bench test it before putting it on. I hooked up the positive cable from a 12V car battery to the positive (starter) terminal, and I hooked up the negative (ground) to the frame where it gets bolted to the engine. I got sparks, but the motor did not turn and I couldn't hear any clicks.
Is this the proper way of bench testing a starter, or am I doing something wrong?
Or.... Is it possible that I got a defective rebuilt starter?
The starter is a ACDelco from Rockauto.com. Part #3361012
Thanks