Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 19-09-2010, 08:47   #16
Senior Cruiser

Cruisers Forum Supporter

Join Date: Mar 2007
Location: Santa Cruz
Boat: Boatless Again
Posts: 4,321
My pappy taught me to always check the cheapest and easiest things first. The fact that you were able to wait a bit and motor for another few hours means that the problem could be a blocked fuel tank vent. The next time it starts to die, the first thing to do is to crack open the fuel tank fill-if you hear a whoosh and the engine is happy, you have found the problem.
__________________

__________________
donradcliffe is offline   Reply With Quote
Old 22-09-2010, 10:10   #17
Registered User

Join Date: Feb 2008
Boat: Cape Dory 330
Posts: 157
Turns out it was not the fuel vent, it is sludge, although I'm not sure how much.
I found a place here that will put an inspection port in the tank, manually clean the tank, and also scrub/polish the fuel. So I think I will bite the bullet and get it taken care of.

The only concern is, the 6" plate will probably not fit in the top of the tank so they'll have to put it on the side. Is this ok do you think? The guy at the tank company seemed to suggest it was preferable to put it on top, but he could do it on the side if need be.
__________________

__________________
sgtPluck is offline   Reply With Quote
Old 22-09-2010, 10:19   #18
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
I have seen them installed on the sides of a trawler's tanks with no problems. Certainly I would prefer the top but that is just not possible on some tanks. Any clean out port that doesn't leak is preferable to none. Good luck.
__________________
DeepFrz is offline   Reply With Quote
Old 22-09-2010, 10:32   #19
Registered User
 
Eleven's Avatar

Join Date: Sep 2007
Location: Southampton UK
Boat: Jaguar 22 mono called Arfur.
Posts: 1,220
Images: 3
I'd considered, and not got around to, adding an electric recirc pump to my tank so i can clean debris from fuel and remove water/gunk.
I like the day tank approach better, especially if it can be above the engine for gravity feed. A simple return line from the bottom of the day tank to the main tank will guarantee clean fuel to the engine, but the electric transfer pump is still necessary.
Best option will very much depend on the layout of your boat. A winter project perhaps.
__________________
Ex Prout 31 Sailor, Now it's a 22ft Jaguar called 'Arfur' here in sunny Southampton, UK.
A few places left in Quayside Marina and Kemps Marina.
Eleven is offline   Reply With Quote
Old 22-09-2010, 15:13   #20
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Eleven, I don't want to go to far off topic here, but in my opinion your ideas are not necessarily either/or. Both might not be a bad idea, but certainly a fuel polishing system is worthwhile. Maine Sail has some interesting pictures about his system installed when he installed a new fuel tank. Worth having a look at.

Replacing A Fuel Tank Photo Gallery by Compass Marine at pbase.com
__________________
DeepFrz is offline   Reply With Quote
Old 22-09-2010, 19:30   #21
Registered User
 
svcambria's Avatar

Join Date: Jun 2010
Location: Mexico (currently)
Boat: Panda 40 - S/V Cambria
Posts: 573
I installed a one cylinder Kubota diesel for a generator, with a fuel lift pump, and an unintended consequence was that about four times as much fuel was pumped to the unit than needed, all of it going through a Racor filter, which polished the fuel as the generator ran. Using diesel actually kept the tank clean...

Michael
__________________
svcambria is offline   Reply With Quote
Old 22-09-2010, 21:09   #22
Senior Cruiser
 
DeepFrz's Avatar

Cruisers Forum Supporter

Join Date: Mar 2006
Location: Winnipeg
Boat: None at this time
Posts: 7,930
Michael, now how much fuel did that little pump really move through your filter? A fuel polishing pump should move a lot of fuel and the system should really be separate from the fuel feed to any engine.
__________________
DeepFrz is offline   Reply With Quote
Old 22-09-2010, 21:27   #23
Registered User
 
svcambria's Avatar

Join Date: Jun 2010
Location: Mexico (currently)
Boat: Panda 40 - S/V Cambria
Posts: 573
It is an "interrupter" pump, running from 2 to 5-ish psi, my imperfect impression is it moves about 1/4 gallon per minute, so if the generator runs for an hour the lift pump moves about 15 gallons of fuel with most of it being returned to the tank. The Racor filters the fuel as it goes through; by volume the 55 gallon tank would be "completely" filtered in about four hours of generator use. The intention was to supply fuel to the generator; the by-product is that the tank fuel gets filtered. Ideally the tank should be agitated with high pressure return to mix everything up, but I will take what I can get - especially as windfall...

Michael
__________________
svcambria is offline   Reply With Quote
Old 24-09-2010, 17:51   #24
Registered User

Join Date: Feb 2008
Boat: Cape Dory 330
Posts: 157
For the record, this was the outcome of my situation...
I had an inspection plate installed today, and we manually cleaned out the tank. There was a little bit of sludge in there, not much. However, the nylon pickup line was almost flush with the bottom of the tank, leaving a very small gap for what sludge there was to plug it up easily. We clipped a small bit off the bottom of the pick up hose.
I'm hoping I should be all set now, I'll add a bit of biobor every time I fuel up.
__________________
sgtPluck is offline   Reply With Quote
Old 24-09-2010, 18:43   #25
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,314
Sounds like dirty fuel.

b.
__________________
barnakiel is offline   Reply With Quote
Old 25-09-2010, 10:34   #26
Registered User
 
Eleven's Avatar

Join Date: Sep 2007
Location: Southampton UK
Boat: Jaguar 22 mono called Arfur.
Posts: 1,220
Images: 3
You may remember that Richard Bransome's ttransatlantic power boat record was hit by dirty fuel problems following a quake which caused the fuel carry a lot of sediment that blocked the engine filters.
The first thing to do, given that proper fixes involve a bit of work, is to add a second fine filter in parrallel with the current one and add tee valves so it's a quick change over and will allow the non-active filter to be changed while the engine continues.
Don't have a system that can allow both to block.
__________________

__________________
Ex Prout 31 Sailor, Now it's a 22ft Jaguar called 'Arfur' here in sunny Southampton, UK.
A few places left in Quayside Marina and Kemps Marina.
Eleven is offline   Reply With Quote
Reply

Tags
fuel

Thread Tools
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
Yanmar 3GM30F Fuel Problem? Marauder Engines and Propulsion Systems 4 08-01-2010 14:40
Fuel problem Charlie Engines and Propulsion Systems 19 08-04-2008 19:53
No Fuel Problem S/V Elusive Engines and Propulsion Systems 17 24-03-2008 16:46
Aluminum Fuel Tank Problem Benny Construction, Maintenance & Refit 8 30-03-2007 16:10
Yanmar fuel supply problem Wahoo Sails Engines and Propulsion Systems 32 19-03-2007 22:24



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 21:57.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.