how to clean a fuel tank without removing it
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How to clean a fuel tank without removing it?
Date: March 08, 2020 11:32AM
Drained most of the gas out of the '69 fuel tank today...I can still smell that old gas on me...lol
Anyway, I've got to figure out a way to get the remaining gas out. Once I do, what's the best way to clean the tank? I took a picture of the tank with some gas still in it. Doesn't look too bad. Thoughts?
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1964 Monza Coupe Bahama Green
1965 Monza 140 Corvette Yellow metal flake (Canadian Corsa Clone)
1965 Corsa 140 Mist Blue (WRN)
1965 Corsa 140 Mist Blue (LOS)
1965 Corsa 140 Crocus Yellow
1966 Corsa 140 Marina Blue project
1966 Corsa 140 Convertible Ermine White (Project or Parts)
1966 Monza 140 Convertible Lemonwood Yellow (Project or Parts)
1969 Monza 110-PG Dover White
Right in the middle of South Carolina
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Re: How to clean a fuel tank without removing it?
Date: March 08, 2020 11:52AM
If you're not going to take the tank out, you can do what I did which was to pour a zillion additives down it. The ones that claim to clean away deposits. Amsoil makes some good ones. Add those to the fresh gasoline that you do put in it and then just run it a couple of tanks full until everything is cleaned out. The car ran a lot better about a month after I bought it going that way.
Also, change the filter on your tank float, or get a whole new one. They sell online for 50 and below.
Eric C. Player
Fargo, North Dakota
MEMBER: CORSA National, Central Coast CORSA, South Coast CORSA, Vintage CORSA, Sfba CORSA, and Great Plains Corvair Club.
THEN: 1965 Monza 110, Canary Yellow - 1965 Corsa 180 Turbo, Red - 1966 Monza 110, Purple - 1967 Monza 140, Red - 1966 500 110, Black; nicknamed "Shadow" - 1965 Monza 110, Camaro Yellow; nicknamed "Silver"
NOW: 1966 Corsa 180 Turbo, Blue; nicknamed "Bluvair"
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"He cautioned me not to take notes. It would not have helped if I had, as he would start a paragraph with, 'It is therefore obvious. . .'
and go on from there to matters which may have been obvious to him and God but to no one else."
-- Robert A. Heinlein, character of Daniel B. Davis, 'The Door Into Summer.'
Re: How to clean a fuel tank without removing it?
Date: March 08, 2020 12:37PM
I would put it up on jack stands and remove it. Old gas, water and crud may be inside that may come loose later. Not a good situation later. Just need to remove sway bar links and rotate bar down. Then get straps off. New hoses at filler and vent to replace old possibly rotted ones.
Otherwise, put rags soaked with mineral spirits and wipe down the inside best you can. Many rags until it is clean, then a new filter in rear wheel well area to keep trash out of carbs.
But saying all that, if your fuel lines are all rusted, maybe it is time to renew the system by installing new parts and cleaning the tank properly.
Re: How to clean a fuel tank without removing it?
Date: March 08, 2020 01:27PM
Oh wait so that was a picture looking DOWN into the tank? How do you even see that without removing it?
Eric C. Player
Fargo, North Dakota
MEMBER: CORSA National, Central Coast CORSA, South Coast CORSA, Vintage CORSA, Sfba CORSA, and Great Plains Corvair Club.
THEN: 1965 Monza 110, Canary Yellow - 1965 Corsa 180 Turbo, Red - 1966 Monza 110, Purple - 1967 Monza 140, Red - 1966 500 110, Black; nicknamed "Shadow" - 1965 Monza 110, Camaro Yellow; nicknamed "Silver"
NOW: 1966 Corsa 180 Turbo, Blue; nicknamed "Bluvair"
---------------------------------------
"He cautioned me not to take notes. It would not have helped if I had, as he would start a paragraph with, 'It is therefore obvious. . .'
and go on from there to matters which may have been obvious to him and God but to no one else."
-- Robert A. Heinlein, character of Daniel B. Davis, 'The Door Into Summer.'
Re: How to clean a fuel tank without removing it?
Date: March 08, 2020 01:55PM
I always "Back Flush"...
MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
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Re: How to clean a fuel tank without removing it?
Date: March 08, 2020 02:59PM
playerpage Wrote:
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> Oh wait so that was a picture looking DOWN into the tank? How do you even see that without removing it?
Pulled out the float assembly from the side of the tank.
------------------------------------------------------------------------
1964 Monza Coupe Bahama Green
1965 Monza 140 Corvette Yellow metal flake (Canadian Corsa Clone)
1965 Corsa 140 Mist Blue (WRN)
1965 Corsa 140 Mist Blue (LOS)
1965 Corsa 140 Crocus Yellow
1966 Corsa 140 Marina Blue project
1966 Corsa 140 Convertible Ermine White (Project or Parts)
1966 Monza 140 Convertible Lemonwood Yellow (Project or Parts)
1969 Monza 110-PG Dover White
Right in the middle of South Carolina
Re: How to clean a fuel tank without removing it?
Date: March 09, 2020 07:25AM
Haven't I read here that acetone dissolves rotten fuel deposits? Lately I've just been installing new tanks because they are cheap and clean.
Joel
Northlake, TX
5 Ultravans, 123 Corvairs and counting...
Re: How to clean a fuel tank without removing it?
Date: March 09, 2020 07:37AM
Okay, looking through the float hole was what I thought that was a picture of. But somehow, I later got the impression that it was meant to be a vertical picture. Duh.
Eric C. Player
Fargo, North Dakota
MEMBER: CORSA National, Central Coast CORSA, South Coast CORSA, Vintage CORSA, Sfba CORSA, and Great Plains Corvair Club.
THEN: 1965 Monza 110, Canary Yellow - 1965 Corsa 180 Turbo, Red - 1966 Monza 110, Purple - 1967 Monza 140, Red - 1966 500 110, Black; nicknamed "Shadow" - 1965 Monza 110, Camaro Yellow; nicknamed "Silver"
NOW: 1966 Corsa 180 Turbo, Blue; nicknamed "Bluvair"
---------------------------------------
"He cautioned me not to take notes. It would not have helped if I had, as he would start a paragraph with, 'It is therefore obvious. . .'
and go on from there to matters which may have been obvious to him and God but to no one else."
-- Robert A. Heinlein, character of Daniel B. Davis, 'The Door Into Summer.'
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how to clean a fuel tank without removing it
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