I was trying to replace my timing belt on a 2001 2.9L S80 this weekend, i found the two marks on the camshafts, but had the hardest time finding the marks on the crankshaft. I turned the crankshaft clockwise a full rotation a few times and couldn't find them, so i thought it would be a bright idea to turn the crankshaft counterclockwise. While turning it counter clockwise I heard a click. this happened 3 times, and now I can't turn it clockwise by hand more that 1/4th of a turn.

Of course after I did that I read "(note: crank CLOCKWISE and ONLY CLOCKWISE with this engine! A little back is okay, but generally since this is an interference engine the official warning is DO NOT crank this engine backwards or counter clockwise at all" in another post.

I'm hoping my solution is as simple as just taking out the sparkplugs or maybe taking off the timing belt and turning the crankshaft while the camshafts stay in their current position but I dont want to to further damage so my question is...

What must be done to get the engine to be cranked by hand in a clockwise position correctly again?

Any help offered would be greatly appreciated.

Thanks in advance