I have an z16xep engine, from opel astra h 1.6 gasoline. I removed the timing belt and checked the timing marks. Then I put on the new timing belt about three times. Every time the marking on the lower sprocket does not exactly match. I do not have the special tools. I can manually rotate the timing belt with my hand using the lower sprocket bolt and a tool.
At the moment the timing marks of the top sprockets look like (seems correct):
Is this good enough, I can't seem to get it better. I don't know what to do, I am afraid of ruining the engine.
When I watch this https://www.youtube.com/watch?v=k_ffXzzs02s it seems to be possible to get all markings correct, does anyone have advice?