Hello I really need some help, so hopefully someone will be willing to help. I have a 2000 c70 with the 2.3 engine and an automatic transmission. I was replacing the timing belt on it and the crankshaft rotated. Thus I lost my timing mark. I have tried to slowly rotate the crankshaft clock wise until I see it again. Well on the first rotation everything is going smooth until I hit what I assume is top dead center. This one was a little harder to rotate through. Then I was on my second rotation about half way through I hit a hard area, and can't get it to rotate through it. I can get it to go slowly in counter clock wise to the top dead center. I don't want to force it though because I don't want to damage anything.

 

Are you looking for the mark on the crankshaft to properly line up the timing marks? It is pretty hard to see unless you know what you are looking for. The resistance you are feeling might be mormal compression as you are rotating the crank. IF the resistance slowly goes away it is normal compression. If it is mechanical interference, it will not go away. You could always remove all five spark plugs to eliminate the compression resistance.

 

Thank you for the advice it worked great. I got the job done the following day and the car has been doing great. Now I just have to clean my throttle body.

 

Great! Glad it worked out for you!