Have a Gray Marine 327 with re
Have a Gray Marine 327 with reciculation system.
Inspected the Sherwood pump and vanes are ok. Water comes out of both outlets in spurts. Water is getting thru the oil cooler and exhaust manifold and into the front of the block on both port and starboard sides...again in spurts. Removed the relief valves and there is water in the head cavities.
Thermostats were removed and tested and were ok. But not getting any water at all not even the tiny stream they should provide when closed thus no water out the exhaust in 30 seconds as specified by the service manual. Shut her down it says or engine will be damaged. As long as I monitor the temp to < 160 can that be?
My gut says it's the pump not producing enough pressure... evidenced by spurting? The pump is such a simple design hard to imagine what the problem could be. How would you measure the pressure? What are the best tools to do it?
Im running test on trailer with fake a lake input which hasn't been a problem in the past.
Any suggestions would be appreciated.
Have a Gray Marine 327 with reciculation system.
Inspected the Sherwood pump and vanes are ok. Water comes out of both outlets in spurts. Water is getting thru the oil cooler and exhaust manifold and into the front of the block on both port and starboard sides...again in spurts. Removed the relief valves and there is water in the head cavities.
Thermostats were removed and tested and were ok. But not getting any water at all not even the tiny stream they should provide when closed thus no water out the exhaust in 30 seconds as specified by the service manual. Shut her down it says or engine will be damaged. As long as I monitor the temp to < 160 can that be?
My gut says it's the pump not producing enough pressure... evidenced by spurting? The pump is such a simple design hard to imagine what the problem could be. How would you measure the pressure? What are the best tools to do it?
Im running test on trailer with fake a lake input which hasn't been a problem in the past.
Any suggestions would be appreciated.