But it's supposed to suck! - SailNet Community
LinkBack Thread Tools
post #1 of 3 Old 07-29-2011 Thread Starter
Join Date: Jun 2006
Location: Spokane Valley WA
Posts: 67
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 11
But it's supposed to suck!

I have an older (78) Newport 30 with a perfectly good reciprocating style fresh water pump, but I wish I could say it sucks...cause it doesn't...and that's the problem. I drained off the water last winter (to prevent freezing) and filled the system with RV antifreeze. Now that I am ready to blow it out, I can't seem to get the pump to live up to its name. I pulled apart the hose to check the check valve (no issue there) and made sure that it didn't have any obstructions in the body that would prevent water from coming through. I have a recently filled fresh water tank...and when I turn on the pump it just whirrs and whirrs, and nothing comes out. I tried priming it a the pump by pouring water into the reservoir and making sure the pump was running the right direction...but it still doesn't suck, or rather pump. Any suggestions, short of getting a new centrifugal pump and installing it?

I feel like I should be singing the old Kingston Trio song about Desert Pete...you know the lyric...you've got to prime the pump, you must have faith and believe...

Skipper, Das Dawg Haus (when my wife lets me)
simpsoned is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
post #2 of 3 Old 07-29-2011
Tartan 27' owner
CalebD's Avatar
Join Date: Jan 2008
Location: NYC
Posts: 5,090
Thanks: 8
Thanked 138 Times in 130 Posts
Rep Power: 10
If, by reciprocating you mean diaphragm pump, and I think you do, they don't just suck they blow!
I had 2 Jabsco diaphragm pumps that were used as bilge pumps on our boat that I never could get working again, even with the 'service kit' ($80+). I know that the recommended usage for this kind of pump is either as a sump pump for a shower drain or a fresh water system but our boat came with this expensive pump ($250) set up as a bilge pump.
I have converted to a Rule centrifugal pump for the bilge that has worked flawlessly for over a year for around $40. See if Rule makes an in-line pump that you could use for your water system.
Even something like this might/could work: Tournament Series Livewell / Baitwell Pump

"The cure for anything is salt water~ sweat, tears, or the sea." ~Isak Denesen

Everybody has one:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
CalebD is offline  
Quote Quick Reply Share with Facebook
post #3 of 3 Old 07-29-2011
Senior Member
Join Date: Mar 2008
Posts: 890
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 10
You mention it is a reciprocating pump. You do realize they have two check valves, one on the intake and one on the discharge? It sounds like you only checked one. The discharge valve is actually more important than the intake valve. If the intake valve leaks a little it just reduces the pumping capacity, but it will still pump in most cases because the water pressure forces it closed. If the discharge valve leaks you suck air into the pump and it air locks.

Gary H. Lucas
GaryHLucas is offline  
Quote Quick Reply Share with Facebook

Quick Reply

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now

In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page

Similar Threads
Thread Thread Starter Forum Replies Last Post
My Hurth is supposed to.... deniseO30 Gear & Maintenance 31 07-25-2011 09:43 PM
Is a propane Solenoid supposed to be hot ??? Sailormann Gear & Maintenance 15 05-27-2009 11:31 AM
It Just Won't Suck- Antifreeze slocum2 Gear & Maintenance 22 10-27-2008 10:47 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome