Questions and Answers

Dodge D-150 Valve Adjustment Q. I cant get the valves adjusted correctly. It has two rocker arms on each piston with a bolt on each arm. It doesn't have the bar across the arms. I adjust one side right and by the time I get to the other side the bolts loosen. Why won't the bolts stay tight. 1993 Dodge D-150 3.9 litre V-6 Automatic About 170,000 miles

A. These engines are equipped with hydraulic lifters. No provision for adjustment is provided.