Magnum engine misshapes..,

Ouch, hate hearing that! How much coolant has it lost? While you’re looking at the spark plugs do a compression test. And if there’s not anything really obvious, maybe invest in a bore scope camera for a phone or tablet. After it sits overnight, you may want to pull the plugs out and have someone spin it over while you watch. You might see it blow coolant out one of the plug holes. And, in the event that one or two cylinders has substantially filled with coolant, you may keep from risking a hydro lock event, too.