Did I bend a valve?

With the timing belt off I was going to use the "starter" method to get the timing gear bolt off the crankshaft. Only problem is that I forgot to use a screwdriver to lock the flywheel, so when I hit the key I heard a loud "bang" noise. I don't know if it was from the wrench impacting the frame or pistons impacting the valves. When I took a look at the crankshaft it had obviously moved about 1/3 of a turn.

I aligned the timing marks put the timing belt back on, and started it up just to see if it would run...and it did. I only let it run for about 10 seconds since I knew it was low on oil, and it ran fine, but there seemed to be more engine noise than there normally would be. I know it's about 2 quarts low on oil, and the timing cover, was off as were all other belts & pulleys. I don't know if it was actually louder than normal, or if it's just my paranoid mind. I don't suppose that there's any tell-tale way to know without tearing it all down...is there. Would it still run even if they were bent? Should I just continue to drive it if it runs ok under load? This was in the process of replacing a front crankshaft seal...again...

I hope I didn't really blow it...!

metro 3 cyl engines are non interference if the belt breaks or you ruen engine over without belt on it will not bend a valve

I tossed a timing belt at 70 mph coming home from destin,Fl. this summer, had aspare belt with me lined up timing marks installed belt and came home no prob with engine

Agreed. it should be fine. Get the engine together, and run a compression check. that'll tell you if you bent a valve or not.