Mini Raw water stream?

Post here if you want to discuss a topic specific to the MV/32, MV/34, and MV/41.
Post Reply
User avatar
AMCarter3
admiral
admiral
Posts: 239
Joined: Thu Apr 21, 2016 8:32 am
Location: Bellingham, WA
Contact:

Mini Raw water stream?

Post by AMCarter3 » Sat Jul 07, 2018 10:44 am

Can someone explain the purpose of the tiny port on the hull beside each engine that spouts a tiny stream of raw water when the engine starts up? It seems to run for a bit and then stops.
Mac Carter
2006 34' PDQ PowerCat "All Heart"; MV 98; twin 100 HP Yanmars
Home Port: Bellingham WA 98229
Member of San Juan Sailing & Yachting charter fleet: http://sanjuansailing.com/charter-detai ... .php?id=35

duetto
admiral
admiral
Posts: 686
Joined: Wed Jun 15, 2005 11:18 am
Location: ICW (32043)

Re: Mini Raw water stream?

Post by duetto » Sat Jul 07, 2018 12:05 pm

Part of siphon break. Engine stops air enters and suction stops. Should have stream with engines running.
john & diane cummings
duetto mv34 #23

User avatar
AMCarter3
admiral
admiral
Posts: 239
Joined: Thu Apr 21, 2016 8:32 am
Location: Bellingham, WA
Contact:

Re: Mini Raw water stream?

Post by AMCarter3 » Sun Jul 08, 2018 8:54 am

Thanks John! Dick Tuschick also sent me this via email:

That is part of an anti siphon valve and should always be “peeing” when the engine is running over 2000 rpm it is critical that this vent never gets clogged as your engine could “drown” as it sits below the waterline.
Mac Carter
2006 34' PDQ PowerCat "All Heart"; MV 98; twin 100 HP Yanmars
Home Port: Bellingham WA 98229
Member of San Juan Sailing & Yachting charter fleet: http://sanjuansailing.com/charter-detai ... .php?id=35

Post Reply