Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 10-11-2008, 07:31   #16
Registered User
 
S/V Illusion's Avatar

Join Date: Oct 2007
Location: Lakewood Ranch, FLORIDA
Boat: Alden 50, Sarasota, Florida
Posts: 1,693
Quote:
Originally Posted by PaulM View Post
I removed the primary filter and it was black with bugs along with the water separator. I replaced the primary with a 2 um, which kind of makes the secondary useless. I was going to use 10 um, but forgot the wrench I couldn't open the canister for the secondary. The vent line was clear and the pick-up was free of any resistance in or out. The engine ran well. The question now is, the best way to treat the tank?

Paul

Paul
You are correct that putting a 2 micron is as the primary makes the secondary useless. This is precisely why engine mfgs recommend a larger primary - Yanmar recommends a 30 micron primary.
You can treat the tank contents by running the fuel through a filter but that cleans only the fuel. The bugs and crud reside on the walls and bottom of the tank only to re-suspend upon agitation.
What you should do is clean the tank itself.
__________________

__________________
S/V Illusion is offline   Reply With Quote
Old 10-11-2008, 08:09   #17
cruiser

Join Date: Aug 2005
Location: No longer post here
Boat: Catalac Catamaran
Posts: 2,462
I use inexpensive 100 micron primary filters (2 engines). Every now and then I do check the secondary filters, and they always looks fine. I did change them 2 years ago just on principle.
__________________

__________________
Tropic Cat is offline   Reply With Quote
Old 10-11-2008, 11:16   #18
Senior Cruiser
 
Vasco's Avatar

Cruisers Forum Supporter

Join Date: Apr 2004
Location: Toronto
Boat: CS36Merlin, "La Belle Aurore" Ben393 "Breathless"
Posts: 7,141
Paul,

If you can remove the tank that's the best approach. I sucked the fuel out of mine and took it to a rad shop where they cleaned it. If you can't remove it look up "fuel polishing" in your area. They will come down and polish the fuel, running it through a few times and cleaning all the crud out of the tank. Nothing worse than crud in the tank. I put up with it for a year and every time I bounced around a bit when I used the engine it would sputter etc. Finally cleaned it and have had no problems since.
__________________
Rick I
Toronto in summer, Bahamas in winter.
http://groups.yahoo.com/group/beneteau393/
Vasco is online now   Reply With Quote
Old 10-11-2008, 19:39   #19
Registered User

Join Date: Oct 2008
Location: lake st clair michigan
Boat: hunter 35.5
Posts: 7
Paul I recommend that you use bio bore to treat the bugs that may be living in your tank and some BG 227d as extra lubricant and detergent for ultra low sulfur fuel so you don’t end up with any fuel related problems from here on out. Jeff
__________________
mastconfusion is offline   Reply With Quote
Old 11-11-2008, 09:56   #20
Registered User

Join Date: Apr 2008
Location: Houston
Boat: Pearson 303
Posts: 84
Send a message via Skype™ to PaulM
Bugs

Thanks to all. As I expected. Cleaning the tank is the long term plan. Will be a big job as the tank is under the cockpit. For now, I will use the biocide and lubricant as Jeff suggested. And buy some extra filters on have on hand to deal with the dead ones.

Paul
__________________
PaulM is offline   Reply With Quote
Old 11-11-2008, 16:59   #21
Sponsoring Vendor
 
Inlet Marine Services's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Jan 2008
Location: Olympia, WA
Posts: 91
The best way is to have the tank cleaned, you can use products such as BioBor Jr the kills the bugs and use a all season addiative which enhances the ability to clean. Keep using the two micron and buy a few extra, I would even put a vacuum gauge on your racor, it lets you know when you are plugging up before you do. As the products kill the stuff you plug up filters.
Inlet Marine Services is offline   Reply With Quote
Old 12-11-2008, 07:52   #22
Registered User

Join Date: Apr 2008
Location: Houston
Boat: Pearson 303
Posts: 84
Send a message via Skype™ to PaulM
Vacuum Gauge

I like the idea of a vacuum gauge. I'm guessing it would go on the outlet to the rancor filter so that when it started to clog there would be a vacuum from the fuel being pulled to the lift pump. What sort of range would I need?

Paul
__________________
PaulM is offline   Reply With Quote
Old 12-11-2008, 08:03   #23
Registered User
 
keyspc's Avatar

Join Date: May 2008
Location: hard aground in C.FL
Boat: 34' 1973 Grampian ketch
Posts: 294
dump some bio-bor in the tank and make sure you have more than a few filters on board.
also, never ever take the screen off the fuel intake! remove the fuel line and blow in it. you should be able to do that with out to much strain. if its impossible to do you've got a clog and your itti bitty lift pump is working way to hard.

FIX: remove strainer and clean and replace. get a electric pump and hook it up to filter and bang hose around bottom of tank -return goes back in fill.
I like to have two racors and a pump and valve asembly so i can by pass a filter or clean out tank without hassel
__________________
keyspc is offline   Reply With Quote
Old 12-11-2008, 10:54   #24
Sponsoring Vendor
 
Inlet Marine Services's Avatar

Community Sponsor
Cruisers Forum Supporter

Join Date: Jan 2008
Location: Olympia, WA
Posts: 91
depending on the racor filter head is where you would put the vacuum gauge. Racor makes a kit and their vacuum gauge is color graphed, simple look to see whats going on. What racor filter do you use?
Inlet Marine Services is offline   Reply With Quote
Old 12-11-2008, 14:40   #25
Registered User
 
bill good's Avatar

Join Date: Oct 2006
Location: Brisbane Australia
Boat: sold
Posts: 721
would not put biobor in by "dumping it in" as it will cause a lump of dead bug to collect in one place. I think I put 2ccs/litre in as the fuel is added. The corect amount is on the tin.
__________________

__________________
bill good is offline   Reply With Quote
Reply

Tags
rpm, yanmar

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 2GM RPM / OVERPROPPED QUESTION Northeaster Engines and Propulsion Systems 9 27-07-2008 19:24
Cruising RPM? Jack Long Engines and Propulsion Systems 20 22-07-2008 15:11
Yanmar 2QM15 woes SailboatJimmy Engines and Propulsion Systems 11 18-07-2008 19:08
Help! Prop shaft woes svwhisper Construction, Maintenance & Refit 14 17-11-2006 16:12



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 13:36.


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.