L Jetronic hose delete

[xavier]

My E30 323i has the analogue L jetronic fuel System. Is there a thread or guide somewhere that shows which vacuum hoses are essential and where they go? I am trying to get mine running smoothly. Over the last 36 years some of the vacuum hoses have been replaced by heater hose. Other hoses are cracked and loose. Under the intake manifold is a bit cobbled together.