Fuel sending unit leaking - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 11-20-2010
Junior Member
 
Join Date: Jun 2004
Location: Irvine
Posts: 18
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Donaldpeter is on a distinguished road
Fuel sending unit leaking

Hello, I own a Newport 28 MK II 1985 sail boat. I've filled my fuel tank up too far and the fuel sending unit is now leaking diesel fuel. My tank is plastic and the fuel sending unit has 5 phillips(+) pan head metal screws and a large rubber washer with 5 holes in it located between the sending unit and the plastic tank. The return wire is under one of these screws. This clearly doesn't seal fuel comming up the screw threads and leaking around the screw heads with a full tank. Can any one tell me if this is normal for my boat or if its the work of the previous owner and what the configuration should look like for a plastic tank. Also is there an easy way to drop the fuel level in my tank so I can do the proper repair. Thanks Pete
Reply With Quote Quick reply to this message Share with Facebook
  #2  
Old 11-20-2010
LakeSuperiorGeezer's Avatar
Senior Member
 
Join Date: Oct 2010
Posts: 551
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 5
LakeSuperiorGeezer is on a distinguished road
You could tie the boat securely to the dock, start the engine and put it in gear, advance the throttle a bit for added fuel consumption and burn some of the diesel off. You could also call an auto parts store, tell them the problem, and get a siphoning setup to move diesel to a separate container. An automobile parts store would also know the proper sealant for diesel gaskets.
Reply With Quote Quick reply to this message Share with Facebook
  #3  
Old 12-14-2010
Junior Member
 
Join Date: Dec 2010
Posts: 1
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
ok5597 is on a distinguished road
Same problem -- yours fixed?

I have the same problem. I overfilled the fuel tank and the screws on the top of the sending unit are leaking. It seems that the leak would occur when fuel is sloshing around underway anyway, so siphoning out fuel isn't really a solution. Have you found a solution?

M
Reply With Quote Quick reply to this message Share with Facebook
  #4  
Old 12-14-2010
tommays's Avatar
Senior Member
 
Join Date: Sep 2008
Posts: 4,290
Thanks: 1
Thanked 30 Times in 30 Posts
Rep Power: 7
tommays will become famous soon enough
Thread sealent for fuel
__________________
1970 Cal 29 Sea Fever

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1981 J24 Tangent 2930
Tommays
Northport NY


If a dirty bottom slows you down what do you think it does to your boat
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Quick reply to this message Share with Facebook
  #5  
Old 12-15-2010
rikhall's Avatar
old guy :)
 
Join Date: Feb 2008
Location: Fredericton, NB, Canada
Posts: 1,054
Thanks: 13
Thanked 14 Times in 12 Posts
Rep Power: 8
rikhall will become famous soon enough
One little thing I did that might help in the future (or might help others before it happens) is that with the tank as empty as possible, I poured in 5 gallons, marked the fuel gauge with a sharpie, poured in five more, marked it with a sharpie, and repeated until just about full.

By looking at the fuel gauge, I now know, for a fact, how much it can take without over filling.

I also know how much is left in the tank for planning purposes.

This tip came from my friend Mike when we were setting up our boat from two boats ago.

Rik
__________________
Irwin Citation 34
Mystery
Reply With Quote Quick reply to this message Share with Facebook
  #6  
Old 12-20-2010
Junior Member
 
Join Date: Jun 2004
Location: Irvine
Posts: 18
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Donaldpeter is on a distinguished road
The way I solved the issue was to first drain 5 gallons from the tank by disconnecting the fuel feed hose from the fuel pump and running it to a fuel tank in front of the engine. I then removed the fuel sending unit and cleaned it, the screw holes, the tank interface, and the screws with Simple Green and a clean rag. I installed a new gasket and used permatex #2 on both sides of the gasket and on the screw threads and screw threaded holes in the tank. I assembled using my calibrated hand for proper torque. I also sprayed and poured simple green where the diesel fuel leaked and let it run into the bilge. I have a solar fan that vent through the hatch. It took about a month for the smell to dissipate. If you have screws that thread into a plastic tank like I did you might want to reevaluate permatex #2. There may be a better sealant.
Reply With Quote Quick reply to this message Share with Facebook
Reply

Quick Reply
Message:
Options

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:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

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

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Fuel Injector Pump leaking Axle2121 Gear & Maintenance 18 10-02-2012 03:55 PM
Temp Sending Unit on Heat Riser - how to test? preservedkillick Gear & Maintenance 3 05-22-2009 07:59 PM
Leaking Catalina 270 fuel tank grizzly Catalina 2 11-25-2007 11:51 AM
Leaking fuel tank pdoyen Gear & Maintenance 1 05-23-2003 10:23 AM
Sending Unit for DET MAR Fuel Gage ABullard Gear & Maintenance 3 01-29-2003 05:14 AM


All times are GMT -4. The time now is 07:51 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2015, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012

The SailNet.com store is owned and operated by a company independent of the SailNet.com forum. You are now leaving the SailNet forum. Click OK to continue or Cancel to return to the SailNet forum.