A friend has just bought a 91 Hiace with a 2RZ 2.4L engine.

It appears that several vacuum lines are missing off the engine which are causing it to idle high.
It also has a line missing of the top of the cam cover which then causes fumes to escape into the cabin.

As you can guess, this isn't the best situation, so if anyone can help with diagrams or photos of what should be connected where, it'd be muchly appreciated.