When trying to start my car, I'm hearing a "clunking" noise when the starter is engaged. The car is turning over, but there is this loud clunking/grinding type of noise. But it doesn't do it every time, sometimes it will turn over and fire right up. I've given the starter a visual look as well as the flywheel, and everything seems to be okay. No broken teeth in either and nothing that makes it look like it's binding. Any suggestions?

 

Try checking the flywheel (flexplate).It may be broken where it bolts to the crankshaft.