SailNet Community - Reply to Topic
Thread: Bilge Pumps Won't Suck Reply to Thread
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:

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.

  Additional Options
Miscellaneous Options

Click here to view the posting rules you are bound to when clicking the
'Submit Reply' button below

  Topic Review (Newest First)
08-30-2012 02:33 PM
Re: Bilge Pumps Won't Suck

I had issues with the bilge pump not working unless you jiggled it, last week. Had a bunch of bad corroded crimps in the wiring.
08-30-2012 02:33 PM
Re: Bilge Pumps Won't Suck

Hahaha excellent
08-30-2012 02:24 PM
Re: Bilge Pumps Won't Suck

08-30-2012 01:43 PM
Re: Bilge Pumps Won't Suck

I believe this principle works with bilge pumps as well.
08-30-2012 08:50 AM
Re: Bilge Pumps Won't Suck

Good suggestions, I'll definitely check without the hose on.

Once it primes (wiggling it seems to do this), it pumps fine and will quickly empty the bilge.

This is the pump I have, it sits directly in the water
RULE INDUSTRIES Rule-Mate Fully Automatic Bilge Pumps at West Marine
08-30-2012 08:34 AM
Re: Bilge Pumps Won't Suck

I recently had a similar problem, it would prime but took forever for the level to go down. Turns out the bilge hose was composed of about 4 small pieces and at each joint it leaked like crazy. Replaced it with one continuous hose and now no problem. Amazing what PO's have done to their boats.
08-30-2012 07:49 AM
Maine Sail
Re: Bilge Pumps Won't Suck

Originally Posted by vtsailguy View Post
I had a bilge pump that wouldn't seem to "prime" and start sucking unless I waggled it about.

I replaced it with a new bigger one and seem to have the same problem. Even when there are a few inches, well above the impeller, it won't prime and suck.

The height to the hull outlet seems ok. Any ideas?
Get rid of the in-line check valve, which will cause exactly what you are seeing....
08-30-2012 07:37 AM
Re: Bilge Pumps Won't Suck

Did you try the pump without the hose attached? Also, I hope you aren't using a check valve. They tend to clog and cause exactly this kind of problem.
08-30-2012 02:26 AM
Re: Bilge Pumps Won't Suck

This is a long shot, but is it possible that there is an obstruction in the discharge line (air lock) preventing bilge water from reaching the impeller? A sag in that line holding water is what I have in mind.
08-29-2012 08:58 PM
Re: Bilge Pumps Won't Suck

Sorry to ask such a basic question, but are you sure that you did not wire it up backwards?

Try some systematic troubleshooting. So you have power, the impeller spins...check. Try it with the bilge pipe disconnected, of with a small length to check you are blowing not sucking - see if the water flows easily...basically test the pump/wiring. Perhaps put the pump in a bucket of water to test it.
If all the above shows a functioning pump, perhaps your bilge pipe is blocked. Try blowing down it!

Good luck...
This thread has more than 10 replies. Click here to review the whole thread.

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

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