AFAIK, there is no EGR system on the 84 2.2's. This came later on the 60x. I have a VERY early one (motor number ...00354). There were changes made very early, but after mine, as i recall it was at motor number ...01736. The changes had to do with cooling/oil openings in the block and head. I don't believe that any 84's have any EGR equipment.