I didn't see anything cracked under the car but I did notice some pretty consistent smoking behind the engine, under the intake manifold. Another thing is that on a few occasions the first start up in the morning, the engine would start but would slowly turn over, like the idle rpm would be really low and slowly go up. . I don't know if that has anything to do with it. I am in the process of replacing the starter contacts, because the starter would click when I turned the key. Would a bad starter cause a start up like that?