Is vent filter (85) the same type as the primary fuel filter? That's what I have connected to the switchover valve (81) and the vacuum converter (84) on one end connected just like the schematic, but the other end of the filter not going anywhere just open to ambient air. Should that be connected to the VCV (65) such that it gets cabin air just like the VCV?
And what is the function of the vacuum converter (84)? From the schematic it looks like it sends either some vacuum or ambient to the EGR. Is that correct?
What's ARV?
Thanks.

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1985 300D Turbo
"Evolution is God's way of giving upgrades" Francis Collins