One engine won't start on my 97 challenger 1800. One engine fires right up and the other goes "clunk". I am new to this so I tried the "hammer attack" with no success. I pulled the starter, took it to a rebuild shop, and was told that it was okay. Upon reinstalling it, the engine will not turn over a few times then quit, turn over once or twice, and then nothing when you push the button again. The other engine, even after all of this, still starts right up. Wait 5-10 min and go back to the other engine and the same sequence of events occurs. . . . I have tried another battery directly connected to the starter via jumper cables to no avail. . . Battery issue ? Solenoid issue ? other ? Any help would be appreciated.