Posts: 215
Threads: 94
Joined: Oct 2018
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1
Home Port: ludington michigan
Vessel Info: 2003 4200 open qsm 11 660hp
went to turn on raw water washdown for the first time this season, hit the power , heard the pump turn on, went to the hose and nothing came out?? turned of switch under the stairs, tried a couple of minutes later and when i turned switch back on i did not hear it go back on and still no water??? have a 2003 42 open tiara?? does it need to be primed?? and how do you do that??? or maybee the valve is turned off??? dont know why i dont hear the pump kick back on though???? thank you....
Posts: 702
Threads: 14
Joined: Dec 2010
Reputation:
11
Home Port: Kings Park, NY
Vessel Info: 2003 38' Open Cummin's 6CTA's (450 hp)
No sure on the 42 WRT to priming as my 38 has a raw water pump but its located below the water line and doesn't require priming... Check to make sure the through Hull valve is open. I also have 2 switches, the first under the stairs on the main 12v power panel. A 2nd is in the cockpit that turns the pump on itself when pressure drops below ~40psi. Both need to be on for the pump to work... Internal to the pump, assuming it is the same or similar to mine, is a pressure switch which opens once pressure reaches pump pressure (~40psi). The pressure switch on mine stuck in the "OFF" state and prevented the pump from coming on.. I tapped the top of the switch and it stated to work... Yours may be stuck as well.. M2C
