tod84944

Had somone bring me there 86 that they just got off of e-bay. The car would not start, and replacing the dme relay got it going. At idle, now that the lifters are pumped up, is pretty quite. Give it a little throttle, loud rattle. At idle the motor will have no noise, then it will get a metallic tick from the top and it will idle down. When the metallic tick from the top goes away about 4 secs later, it will get a muffled, but slight, knock from down lower.
When the drain plug was pulled, it was pretty clean with just a few "dust" size pieces.
If a lifter had gone bad, is it possible, that you can get some vavle-piston contact. If a valve spring set has gone bad, same question.
Worst case, con-rod bearings need replacing.
Oil pressure is good though. When the car starts, 4 bar. After the car reaches temp, only drops to 3 bar at idle.
Good compression on all 4, 160
But here is another thing, white smoke out the tail pipe......

bader$

Sounds bad. A bad lifter will not Cause valve/piston contact. Being quiet at idle but knocking when reved up sounds like rod knock, if so likely will need bearings and the crankshaft machined or replaced. White smoke could be steam/Blown headgasket or really really rich, like bad fuel pressure regulator.