Re: No Compression

Posted by kevinpackard On 2024/3/2 18:49:36

Probably stuck valves. Do like Kev said and remove the valve cover to see which ones are stuck. I've had success with putting Marvel Mystery Oil in the cylinders and letting it soak for several days. At the same time I sprayed the valve stems from the side with penetrating oil. Over the course of several days I turned the engine by hand to work the valves up and down. Over a few days the valves started to move slowly. Eventually they moved enough to feel comfortable to start the engine.

Once the engine warmed up the valves freed on their own and the engine ran smoothly. I did this with two cars and they have been running fine since. Stale gas is your enemy.