Best way to clean inside of fuel tank? - Page 2 - Defender Source
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  #21  
Old January 26th, 2012, 06:40 PM
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Quote:
Originally Posted by down_shift View Post
Ed, and after you are finished smelling those chemicals, how are you going to dispose of them? Factor that into the equation.
Fine point russell.

I could always refurb the old tank when I replace it with the new one, or just sell it cheap to someone who has more time / resources than I do.

I figure the galv tank adds value to the truck anyways.
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  #22  
Old January 26th, 2012, 06:41 PM
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All I am suggesting is this -

1. drain most of the diesel into a container for re-use
2. drop the tank
3. throw a chunk of chain in there, tape up the holes if necessary and swirl/shake it up.
4. drain into a clean pan that you can strain out the crap and reuse the diesel if it looks ok
5. take a mirror on a stick and examine the inside.
6. repeat 3-5 a few times if needed.

So what's this going to take - an hour or two? Worst case you see the tank is bad and then you order. Or you stick the tank back in and put the diesel back in. It seems silly to jump to needing a new tank when it sounds like the only problem is the fuel has been sitting forever.
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  #23  
Old January 26th, 2012, 06:47 PM
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with you charles, I'll do the checks tonight
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  #24  
Old January 26th, 2012, 11:37 PM
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Well, I just checked Dave's recommendation about not using a galv fuel tank in a defender.

He's right, there seems to be a lot of literature saying that diesel fuel and galvanizing don't mix.

welllll, there goes that idea
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  #25  
Old January 27th, 2012, 02:42 PM
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Call Rimmer the photo seems generic and comes up for more than one tank spec.

Googled galvanised diesel fuel tank and yes it seems to be a bad think to do - found out something new today.
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  #26  
Old January 27th, 2012, 06:05 PM
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There's this

http://www.ebay.co.uk/itm/LAND-ROVER...#ht_1562wt_758
or this
http://www.ebay.co.uk/itm/LANDROVER-...#ht_955wt_1121
or
http://www.ebay.co.uk/itm/LAND-ROVER...#ht_1825wt_758
or
http://www.ebay.co.uk/itm/LANDROVER-...#ht_500wt_1006
finally
http://www.ebay.co.uk/itm/Land-Rover...4#ht_605wt_758
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  #27  
Old January 27th, 2012, 07:51 PM
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Here you go

Hook the fuel lines up to a boat removable tank. Throw a chain in the empty tank. Drive around like this for a couple weeks. Periodacly sp remove chain and use vacuum cleaner to remove broken up deposites. Replace chain and drive some more until clean by the light of a flashlight through the access.

The driving motion is a good way to gently clean the tank inside. When I remove tanks to clean I throw them in the back of the truck for a while with a chain inside, to clean.

If you have a pickup screen on the pickup tube going in the tank. Remove it. They are troublesome. Let the fuel filter catch the debris. Even bacteria clogs those screens.
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  #28  
Old January 27th, 2012, 08:13 PM
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I like the vacuum idea.

It's funny you say this. I was going to jokingly suggest he let Huff drive his truck for a week and it would be taken care of. Besides his driving style, he lives off a windy and hilly road and that would surely agitate it well enough to clean it. Of course my plan would have Jeff cleaning the pickup every few miles, but not my problem. Ed drives like an old lady so no wonder the crud is still there :D

I still think a quick hand shake/clean would do it, but I'd follow Pendy's advice before mine .
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  #29  
Old January 27th, 2012, 08:14 PM
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Wait I retract that statement. Ed does drive like an old lady but doesn't drive the defender so that's moot.
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  #30  
Old January 27th, 2012, 10:14 PM
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Do they make a plastic Td5-style tank for 90s like they do for 110s?
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  #31  
Old January 27th, 2012, 11:29 PM
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Thanks mike for the links.

Yes, Charles is correct I drive like a granny, especially in other peoples cars.

You can guess how long my trips have been since the shmutz blocks up the prefilter quite easily And yes, Jeff would probably be able to pull formula-1 level G's in my truck with his eyes closed around his mountain roads at 2 in the morning coming home from 2 days of wheeling at Rausch Creek without so much as a squeal from the tires.

I do like the prefilter. I can only imagine how much shmutz would have made it into the paper filter without it, and the prefilter is cheaper to clean (free) compared to the paper filter.

So right now I have 1.5 gallons of purple power sodium hydroxide cleaner + a quarter gallon of citrus degreaser sitting in the fuel tank. Pendy, awesome suggestion for moving the truck around, I appreciate it.

I like the chain idea, I will probably have to use several small links because the bottom of the tank has a baffle that would prevent a larger chain from moving around much.

Thanks for the awesome tips guys. I've found that this problem is common with diesel fuel, the brown crud seems to be a dried algae, and looks like the stuff in the attached picture.

The first thought I had when I pulled the stuff off the prefilter was that somebody took a #2 directly into my fuel filler while the truck was sitting.
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  #32  
Old January 28th, 2012, 08:24 AM
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Thinking back to when the truck was sold, I'm sure I drained the tank, tipped whatever came out straight into the 110 and put 20ltrs of fresh diesel in the 90. Who knows what the inside of the 110 tank looks like now
Actually it's run without missing a beat

Maybe you could tack weld some light chains onto a length of light round bar, attach to an electric drill, insert through one of the openings and let rip, it'll flail all the muck off!
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  #33  
Old January 28th, 2012, 10:33 AM
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This is beating a dead (talking) horse. just drop the tank. I use a trolley jack and some blocks if needed. They are thin an not that heavy. Put a pint of kerosene in there with a chain and slosh away. You can put some in the baffle area too. Rinse with water and dump into a sealable container for proper disposal. Repeat until clean. Add a bottle of drygas and put it back in the car. If you want to go the extra mile, do what I did with the removal of the skid plate and POR15'ing the outside so that it doesn't rust between the skid and the tank. I would probably do that even with a new tank especially if it is not a tinned tank. Which mine was.
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  #34  
Old January 28th, 2012, 10:43 AM
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Quote:
Originally Posted by Ren Ching View Post
This is beating a dead (talking) horse. just drop the tank.
Yep

Just get out there today and get going.
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  #35  
Old January 28th, 2012, 01:20 PM
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Quote:
Originally Posted by cgalpin View Post
I like the vacuum idea.

I still think a quick hand shake/clean would do it,.

I agree removing it and cleaning would be best. My idea was for the lazy or intimidated about tank removal.

Still think removing the pickup tube screen is the best course of action though. Have seen those clog up and damage lift pumps to many times. A nice LR sedimentor installed between tank and lift pump, with a removable and cleanable mesh screen is a good way to keep the paper elements clean and bleed off water during winter. More redundacy in an external screen. While I prefer the Raycore route, Land Rover sedimentor seems more correct to your aplication.

Good luck with it. Good news is you are not daunted by the challenge and are determined to keep it burning fuel.

Biodiesel cleans the old fuel deposite tank gunk out better then anything.
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  #36  
Old January 28th, 2012, 03:05 PM
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I think the diesel on galvy issues are much less of a problem with ultra low sulfer diesel, but YMMV.
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  #37  
Old January 28th, 2012, 04:07 PM
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Quote:
Originally Posted by evilfij View Post
I think the diesel on galvy issues are much less of a problem with ultra low sulfer diesel, but YMMV.
Enough to go with a galvanised tank?
Now you've set the cat back amongst the pigeons
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  #38  
Old January 28th, 2012, 06:59 PM
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From his post last night I believe he already pulled it. With any luck we'll hear from him later today or tomorrow with a success story.
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  #39  
Old January 28th, 2012, 07:38 PM
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Originally Posted by mikeslandrover View Post
Enough to go with a galvanised tank?
Now you've set the cat back amongst the pigeons
I don't know enough to say one way or the other for sure, but sulfer is what attacks the zinc and caused issues. Let's put it this way, I would run a galvanized tank with diesel.
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  #40  
Old January 28th, 2012, 11:58 PM
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Yes, success! Dropping the tank was easy, just a few bolts.

The soak in purple power did the trick, the gunk just slid out in a brown sheet, the tank is actually clean now

Thanks for the suggestion, folks. Now I just need to figure out if I want to paint this thing before putting it back in.
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