RickB
Scraping Paint
- Joined
- Oct 20, 2007
- Messages
- 3,804
- Vessel Make
- CHB 48 Zodiac YL 4.2
And if you don't your engine overheats and the impeller melts.
No, you just position the valve so it take a suction from both sources. Since the strainer is below the waterline air pressure is less than sea pressure. Modulate the position so that there is always some water entering the engine driven pump. The pump has to run dry before the engine will overheat, not the other way around.