Hi everyone, I finally got my 86 5kcst cured from high idle. Took some time, effort and (most important) your help. My sincere appreciation to everybody, who have responded with valuable tips. The problem BTW was leaking ISV. Had to put a good one, adjusted CO, idle, ignition and here it goes. Thanks again, Vytas 86 5kcst 120k and flying 87 5ks 150k and going