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Old 10-22-2016, 06:40 PM   #3
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City: Stuart
Country: USA
Vessel Name: Caretta
Vessel Model: Marine Trader Sedan
Join Date: Apr 2012
Posts: 86
Sounds to me like the vented loop is leaking, allowing water to go out probably only until the pressure becomes great enough with higher rpm's. The loop should only let let air in when the engine and associated pressure is off, it should not allow water out while its under pressure. Replace the vented loop or just the valve on top if you can and that should solve the problem.
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