Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 01-10-2021, 12:26   #31
Registered User

Join Date: Aug 2011
Location: Georgia
Boat: Electra/Ariel/Triton
Posts: 282
Re: Leaky Diesel Fuel Tank - Fix or Replace?

Quote:
Originally Posted by Lepke View Post
Whether you fix your current tank or have another built, apply a diesel tank coating to the inside and the tank will outlast the boat.
. What is a diesel tank coating????
Carl-T705 is offline   Reply With Quote
Old 01-10-2021, 12:34   #32
Registered User

Join Date: Jun 2010
Location: Easton, MD
Boat: 15' Catboat, Bristol 35.5
Posts: 3,436
Re: Leaky Diesel Fuel Tank - Fix or Replace?

Since you say it's hard to get out, replace it instead of repair. Aluminum is a better choice if a stock poly tank won't fit.
kmacdonald is offline   Reply With Quote
Old 01-10-2021, 13:02   #33
Registered User
 
Stu Jackson's Avatar

Join Date: Jan 2011
Location: Cowichan Bay, BC (Maple Bay Marina)
Posts: 9,525
Re: Leaky Diesel Fuel Tank - Fix or Replace?

It is truly heartening to hear of successful repair stories.


Anecdotally, however, over the past 20 years that I've been reading boating forums, the consensus has been: if in doubt, rip it out, and replace.


Of course, if it is difficult or impossible to replace, knowing "cures" is always helpful. Thanks for those.
__________________
Stu Jackson
Catalina 34 #224 (1986) C34IA Secretary
Cowichan Bay, BC, SR/FK, M25, Rocna 10 (22#) (NZ model)
Stu Jackson is offline   Reply With Quote
Old 01-10-2021, 13:36   #34
Registered User

Join Date: Dec 2014
Boat: Irwin Center Cockpit 37'
Posts: 17
Re: Leaky Diesel Fuel Tank - Fix or Replace?

Quote:
Originally Posted by and4ew View Post
My planned five-day coastal cruise was cut short when I found that diesel was leaking into my bilge. I checked the hoses and fittings and didn't find any diesel drips, and also the bilge slowly fills even when the engine is not running, so I surmised that the tank itself is leaking.

The tank sits in the bilge, a little off the bottom. It's mounted with fibreglass shims. It's not the original tank but was "custom made"
I'm guessing that the bottom, sitting so close to the bilge, has corroded. I haven't pulled it out yet as it's more than I could do by myself.

My options are to pull it out, find the leak, and weld. Alternatively, I could just replace it with something like a Moeller Marine fuel tank which are not metal. So my first question is: should I fix or replace?


Second question: the Moellers (and others) I've seen don't seem to have a return for diesel. Would I just add another spigot for that? If so, should it have a hose that goes down into the tank (like the feed-side does)?


Third question: my current tank is 70 litres. That seems like a lot for coastal cruising. I consume 1 litre per hour @ 5 kt and don't have to charge my batteries often. I feel like 30-40 litres would be fine for coastal cruising. Thoughts on this?
a third option is to chemically seal the tank. It requires cutting a large hole in the tank, throughly cleaning, then acid etching, then applying sealant..
Chemical cost would be about $100.
Then, obviously resealing access hole.
Your arm & shoulder gets a real workout, but way less that ripping out the entire tank, or giving your wallet a real workout for a much smaller tank.Good luck<.>
r spicer is offline   Reply With Quote
Old 01-10-2021, 14:10   #35
Registered User

Join Date: Mar 2018
Posts: 29
Re: Leaky Diesel Fuel Tank - Fix or Replace?

Might suggest you make sure the vent hose(s) isn't the culprit. If I fill my tank to the point where fuel sits in the vent hose, I get some leakage. my understanding is these hoses can go before welds in the tank itself. Might save you from a much bigger project...
Mjames is offline   Reply With Quote
Reply

Tags
diesel, fuel, fuel tank

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Leaky Hatches - Rebuild or Replace? KelseyB Construction, Maintenance & Refit 2 28-08-2020 06:32
Paint on fix for leaky keel? mrscotty Construction, Maintenance & Refit 5 15-09-2015 04:59
How to weld/glue/fix cracked outboard engine plastic fuel tank? ErikFinn Auxiliary Equipment & Dinghy 31 06-10-2014 15:11
Diesel Fuel Tank vs Portable Diesel Fuel Cell GaryMayo Engines and Propulsion Systems 11 13-11-2012 16:47

Advertise Here


All times are GMT -7. The time now is 12:43.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2023, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.