- Reaction score
On the 5411 on my previous boat, you could feel the resistance as you engaged the compression release and held the valves open. Note it is NOT recommended to engage it when the engine is running. With the engine stopped, try moving the lever and see if you feel resisitance. When engaged, you should be able to rotate the engine by hand. Looks to me like something may be wrong with the linkage actuating the release.