Fuel tank access Engines and Such Forums

avatar

Please consider registering
guest

sp_LogInOut Log In sp_Registration Register

Register | Lost password?
Advanced Search

— Forum Scope —






— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_Feed Topic RSS sp_TopicIcon
Fuel tank access
avatar
White Falcon
Member
Members
November 3, 2019 - 11:22 pm
Member Since: October 12, 2017
Forum Posts: 14
sp_UserOfflineSmall Offline

We had a rough passage up the Chesapeake Bay last month which stirred up the fuel in the tank so that the engine stalled. After changing the fuel filters twice over the next few days, I had the fuel "polished" in Annapolis. Heading south, the engine stalled again the next morning. I discovered the fuel pickup tube was plugged. After blowing that out, the next day the engine stalled again, this time a different problem related to the old fuel filter assy, which developed an air leak. Returning to home base I was determined to fix these problems for good! Attached photos show the steps I took to cut access holes in the top of the tank. Then I was able to clean the remaining black residue from the tank baffles, and a small amount from the bottom. The baffles are all welded to the tank walls.  There is one large baffle that divides the tank in two front to back, top to bottom. Then there are two horizontal wing-like baffles about midway up the tank on both sides, also welded. There is about 1-2 inch clearance between the horizontal baffles and the center vertical baffle. This allows one to reach to the bottom of the tank for inspection or cleaning.  An early hope was to pull the pick up tube and inspect it. However, it was found to be welded at the top and near the bottom of the tank. The tube ends without a strainer, about an inch off the bottom. A simple blast of air, and a ramrod was all that was possible. As another attempt to prevent future problems, I installed a small port to use for a dipstick shown in one of the images (arrow points ). The dipstick allows one to check the fuel level, I marked it in 5 gallon increments. The dipstick I use is a stainless 3/8 tube, which also doubles as a way to draw a fuel sample from the tank bottom using a small hand pump. If water is seen, one could keep pumping until clear fuel is seen. I have added the recommended biocide and fuel stabilizer, so with the proper attention, the original tank should be fine. After cleaning, the access holes were covered with aluminum covers and stainless steel screws. Gaskets are 1/8" nitrile rubber.6156.jpgImage Enlarger

6161.jpgImage Enlarger
6163.jpgImage Enlarger
6175.jpgImage Enlarger
6172.jpgImage Enlarger
6170.jpgImage Enlarger
6200.jpgImage Enlarger
6203.jpgImage Enlarger

Print Friendly
sp_PlupAttachments Attachments
Avatar
Scott Carle
Admin
November 4, 2019 - 11:18 am
Member Since: October 10, 2009
Forum Posts: 1480
sp_UserOfflineSmall Offline

Very Nice.

Still have to do same to my tank.. what did you use for plates over ports on top of tank and to seal them? It looks like stainless? how did you attach them?

Print Friendly
Scott Carle DE38 Cutter s/v Valkyr
avatar
White Falcon
Member
Members
November 4, 2019 - 9:01 pm
Member Since: October 12, 2017
Forum Posts: 14
sp_UserOfflineSmall Offline

Scott, The covers were also aluminum, same thickness, about 1/8". I used nitrile rubber sheet, also about 1/8" and screwed them down with 316 stainless machine screws (#10-24). The tank top was drilled and tapped holding a plastic tray underneath to catch the chips. Frequent vacuuming around the area helps keep things clean.

Print Friendly
Forum Timezone: America/New_York

Most Users Ever Online: 120

Currently Online:
12 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Members Birthdays
sp_BirthdayIcon
Today None
Upcoming None

Top Posters:

Jonathan Oasis: 174

bobmcd625: 165

CAE: 150

mgav451: 143

Rick: 94

svbodhran: 84

Member Stats:

Guest Posters: 7

Members: 364

Moderators: 1

Admins: 1

Forum Stats:

Groups: 3

Forums: 13

Topics: 744

Posts: 3833

Newest Members:

Spirare, BradHartliep, Duncan, MistyDawn, realitysailing, Kwally@sbmn

Moderators: Patrick Twohig: 134

Administrators: Scott Carle: 1480