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From: FOAK on 10 Mar 2010 12:44

You folks are and endless supply of kindness and good will and now I
return to ask your advice:

Old tank, the debris from it is plugging up the carbs.

Some methods: fill tank with diluted muriatic acid, drain and flush.

Fill tank with diluted naval jelly, drain and flush.

Fill tank with acetone, drain and flush.

Fill tank with 50/50 chlorine bleach and water, drain and flush.

Any others?

Thanks in advance,

Biker Dude
From: paul c on 10 Mar 2010 12:56
FOAK wrote:
> You folks are and endless supply of kindness and good will and now I
> return to ask your advice:
>
> Old tank, the debris from it is plugging up the carbs.
>
> Some methods: fill tank with diluted muriatic acid, drain and flush.
>
> Fill tank with diluted naval jelly, drain and flush.
>
> Fill tank with acetone, drain and flush.
>
> Fill tank with 50/50 chlorine bleach and water, drain and flush.
>
> Any others?
>
> Thanks in advance,
>
> Biker Dude

1) Evapo-rust (available in Canada, don't know where else) is rather
'green', stronger than other mild acids but still save to pour down the
drain, although it is re-usable. Have used it twice on 20-year old
tanks that had mild rust including loose rust - it took about three
hours each, just plugged up the holes, put two litres in (cost $20),
propped tank at various angles for 20 minutes each, after each rotation
gave it a shake with a two handsful of small smooth river stones (from
the dollar store). About to try on some thick rust, looks about 1/8"
inch thick. After emptying the evapo-rust, used a few capsful of methyl
hydrate to dry, re-attached petcock (evapo-rust can hurt rubber seals)
and filled immediately with fresh gasoline. If that doesn't work am
going to try 2).

2) Electrolysis, small dumb battery charger, chunk of old iron, washing
sode, water, plastic tub. Only disadvantage I can see is that one may
have to re-paint an external tank afterwards. The left-overs are also
flushable.

From: crn on 10 Mar 2010 13:31
In uk.rec.motorcycles.classic FOAK <jacobsenpaule(a)hotmail.com> wrote:
>
> You folks are and endless supply of kindness and good will and now I
> return to ask your advice:
>
> Old tank, the debris from it is plugging up the carbs.
>
> Any others?

First drain it and dry it out. Remove the drain tap assembly.
Then insert a beermug full of fine gravel, fit the fuel cap and shake
until your arms hurt. Take a rest and repeat twice.
Empty out the gravel and shite, rince with petrol, dry out then treat
with tank sealant.

--
03 GS500K2
76 Honda 400/4 project
68 Bantam D14/4 Sport (Classic)
06 Sukida SK50QT (Slanty eyed shopping trolley)
From: ` on 10 Mar 2010 13:54
On Mar 10, 9:44 am, FOAK <jacobsenpa...(a)hotmail.com> wrote:

> Old tank, the debris from it is plugging up the carbs.

Buy a Kreem gas tank sealing kit.

It contains phosphoric(?) acid for removing the rust and a liquid
epoxy for sealing the etched surface so it won't rust as quickly as if
you'd just left it bare.

If you google back in rec.motorcycles.tech you will also see
references to a similar product called POR-something or other.
From: The Older Gentleman on 10 Mar 2010 15:15
FOAK <jacobsenpaule(a)hotmail.com> wrote:

> You folks are and endless supply of kindness and good will and now I
> return to ask your advice:
>
> Old tank, the debris from it is plugging up the carbs.
>
> Some methods: fill tank with diluted muriatic acid, drain and flush.
>
> Fill tank with diluted naval jelly, drain and flush.
>
> Fill tank with acetone, drain and flush.
>
> Fill tank with 50/50 chlorine bleach and water, drain and flush.
>
> Any others?
>
> Thanks in advance,
>
A nice dollop of ordinary petrol, several handfuls of nts and bolts or
nice clean gravel, replace tank cap, attach tank safely to a small
cement mixer, and let it churn and rotate for half an hour or so.

Remove nuts and bolts or gravel, flush with clean fuel, inspect and if
necessary repeat.


--
BMW K1100LT Ducati 750SS Honda CB400F Triumph Street Triple
Suzuki TS250ER GN250 Damn, back to six bikes!
Try Googling before asking a damn silly question.
chateau dot murray at idnet dot com
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