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Old 05-13-2013, 03:47 PM
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190 Skier 190 Skier is offline
TT Regular
Join Date: Sep 2010
Boat: MasterCraft, PS 190, 1990, 351 windsor
Location: Northern CA
Posts: 43
Water Pump on the Engine

The Y-Tube is to return the hot water that comes from the heater core back to the engine where the water pump on the engine circulates it thru the heater core again. The heater works great when plumbed in this configuration and blows plenty of hot air.
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