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342 toilet prime issues

Liberty44140Liberty44140 Member Posts: 4,350 ✭✭✭✭✭
When I put the boat in the water 2 weeks ago I could not get raw water to pump to the head to flush. Disconnected at thru hull and filter, no luck, ended up using a garden hose to force water and it finally primed and worked fine at the dock. Today we made our first run, 40 miles, 2 hours dock to dock. Toilet lost prime again and so I'll need to get out the garden hose again. Anyone else have this? Ideas on a fix? Thx 
07' Cruisers 390 (Previous Rinker's: 06' 342EC & 01' 310FV)

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    Handymans342Handymans342 Member Posts: 10,375 ✭✭✭✭✭
    You have a loose connection somewhere
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    bella-vitabella-vita Member Posts: 411 ✭✭✭
    Could something be blocked in thru hull fitting? 
    2002 Rinker FV 342
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    Liberty44140Liberty44140 Member Posts: 4,350 ✭✭✭✭✭
    Handy I'll check connections at the pump. The thru hull, filter and head connections are tight. Bella I had a ton of water coming in before today's ride. Has anyone ever had the pump go? I believe it is a "par max 4". Wondering if it's bad and can be rebuilt.
    07' Cruisers 390 (Previous Rinker's: 06' 342EC & 01' 310FV)

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    Liberty44140Liberty44140 Member Posts: 4,350 ✭✭✭✭✭
    So I went over the system and found a crack in the strainer. Was excited to find the priming problem. Replaced it with new strainer, re primed, and after just a short idle to the gas dock it still lost prime. Connections are all good, I opened the shower shelf and checked the pump connections. So I tossed in the towel and ordered a new par max 4 pump rather than keep fusing with it. Probably the valves or diaphram are bad. Hopefully this is it, no clogs.....
    07' Cruisers 390 (Previous Rinker's: 06' 342EC & 01' 310FV)

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