Herrington
New member
On test run, I asked whey the starboard engine was running at a slightly higher temp than the port engine. Previous owner claimed it needed a new raw water pump impeller. Replaced said impeller (Sherwood impeller made by Pentair). Still not getting water flow out of exhaust holes at water line. Lubed the impeller before closing pump housing. Added water to intake hose to make it easier to prime pump. Did I do anything wrong, or have I got another problem? These Crusader engines have an enclosed cooling system and also a raw water cooling system. Fluid levels are good in the enclosed system. What could be preventing water flow through the raw water system? (And before someone asks, yes, I'm a novice big boat owner, but I did remember to open the thru hull valve after the pump repair. Any help here? Thanks in advance.