Have a Suzuki DF 50 that has an obstuction in the water flow system, I think in the small tubes that carry water to the telltale pisser (and I think to a anti vapor lock device). Have tried salt away solution, which has helped, but not solved the problem. Engine is used in salt water and flushed infrequently. <br /><br />Question is will a solution of muriatic acid and water harm anything internally in the engine?