Ism injector

[race7820000]

So I am in the process of changing the injector. I got the new one in but I can't find the timing marks. I'm assuming it's because the pulley is so rusty and pitted. I've tried cleaning with a wire wheel but can't find.

So.... My question is since I'm changing the injector on the number 2 cyl can I roll over motor till number 5 cyl valves start to move? Or does it not work like that? I was thinking if number 5 is moving then number 2 is closed.

Thanks