Bought a 97 Challenger 1800 without taking on it out on the water first. Engines started though. Took it to a shop for tune-up but they said they started the engines and then ran water to them (so they could keep running) and the engines filled with water and died. Shop said could just be the freeze plugs in the exhaust (weld-shop fix) or the engines themselves (deal-breaker, I'll cut my losses and sell the thing for parts). I'm confused though, I get that the engines are liquid cooled and that a leaky exhaust could let in water, but how would the engine let in water? If the engine itself was leaky then wouldn't it not start in the first place, due to inability to get compression? Looking for guidance as to if I pay more $$ to chase this problem or not.