4 wd now functional, started by checking vacuum canisters, all ok, checked both actuators, both worked ok, changed all vacuum hose connectors to the actuators, plastic lines were fine.
Vacuum on engine was 12 before investigation, now at 16+, car idles better, must be blamed on slight leak with or without 4wd engagement.
I am now convinced that the 83's have a vacuum hose system layout the same as the 84-85 schematic, trouble is there is no layout for the 83's, also no mention of the black plastic hoses along with the normal red,yellow, green and white shown.
Thanks for the help and advice, by the way how do you grease the rear joint of the front driveshaft? Special end on grease gun??