My recently purchased 1982 Chrysler 75 is extremely hard to start. Tried starting fluid, started immediately, and ran great all day. Is using starter fluid safe for motor? in addition, motor starts really well if tilted out of water, then submerged immediately. If started lowered into water, won't start at all. I replaced the spark plugs, had the water impellar replaced. Motor only has roughly 35 hours on it. What could my problems be with starting? Any help is appreciated.<br /><br />Thanks<br />Matt