Not really sure where to start, need help..

Expire said
can you point out what is the rocker arm/intake that closes?

here they are labelled for each cylinder. When the intake closes for each cylinder, then it is on the base circle and you can adjust the valves.

Watch the pair for each cylinder and make sure that you notice that the two intakes for #3 & #4 cylinder are next to each other...

I hope that you can follow what I'm trying to say...

View attachment 23w01s6 B.jpg

The silver manifold that stands out on top is the intake manifold and all of the intake valves line up/(are next to) with the ports for the intake.

The rusty one on the bottom is the exhaust, and the exhaust valves line up with those ports...

View attachment Dart Wgn Eng A04 B.jpg