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Old 03-30-2019, 05:26 PM
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Default Gummed up fuel tank?

Have a buggy that was sitting awhile, and the tank has some gummed up nitro in it, and also around the clunk.

Other than buying a new tank, whatís the best way to get it cleaned out?

I was thinking of filling it with fresh 30% letting it sit awhile and dumping it?

Thoughts?

Thanks guys!
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Old 03-30-2019, 05:42 PM
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Dawn dish soap, hot water, let it soak...rinse and repeat.

Once it is clean, rinse it out with nitro fuel. To wash away any water that might be in there.
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Old 03-31-2019, 04:47 AM
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Originally Posted by GripTLR View Post
Dawn dish soap, hot water, let it soak...rinse and repeat.

Once it is clean, rinse it out with nitro fuel. To wash away any water that might be in there.
The better way avoids using water - WATER and GLOW FUEL do NOT go well together.

Fill the tank 1/2-3/4 full with acetone or denatured alcohol. Shake for 20-30 seconds, dump out. Fill 1/2 full with denatured alcohol and repeat the shake and dump. Shake out as much of the liquid as possible, then reinstall tank and run the model as you normally would.

Acetone is used for the really gooey dried out oil. If itís still liquid and will flow a little bit, just use denatured alcohol only. Or clean methanol for those that mix their own fuel. Donít use rubbing alcohol or the like as they contain water. Denatured alcohol doesnít contain any water except whatever it has absorbed from the air.

Trust me on this; DONT use water in your fuel tank! Use solvent only!
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Old 03-31-2019, 04:50 AM
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Thanks guys!!
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Old 03-31-2019, 08:22 AM
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You can use water and soap without any ill affects.

you have to apply common sense. Let the tank dry for a day, or blow it out with compressed air, rinsing it out with nitro fuel collects any left over water, and takes it out of the tank.

if you do not have a gallon of acetone, or any denatured alcohol...dawn dish soap and water works fine. Just apply common sense.
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Old 03-31-2019, 08:29 AM
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It’s just good practice to keep things out of your fuel tank that should never be put in it in the first place. If you’re willing to chance it, that’s on you. I wouldn’t suggest it. And FWIW, a quart of acetone of denatured alcohol lasts a long time. You don’t need to flush the tank 10 times. Usually twice is all it takes.
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Old 03-31-2019, 05:37 PM
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By that logic, denatured alcohol and acetone are also things that should not be in the fuel tank.

like i said before...common sense is required. There may be a million things that can be used to clean out gummed up nitro fuel. Apply common sense when using whatever method you want.

i have never had a problem cleaning my fuel tanks with dawn dish soap and water.
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Old 03-31-2019, 08:31 PM
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alittle bit of fresh fuel,shake and dump and you'll be fine.
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Old 03-31-2019, 09:00 PM
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use pure methanol,,

i dont recommend acetone, it will ruins any rubber/silicone gasket
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Old 03-31-2019, 09:40 PM
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Remove tank from chassis, loop some fuel tube between the two nipples and add some straight methanol and shake. Dump and may have to repeat a few times.
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Old 04-01-2019, 04:03 PM
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Acetone is no worse on gaskets and seals as Nitromethane is.

The logic behind my advice is the solvents listed (including pure methanol if you can get it easily and cheap enough) will dissolve the oil far better. But do what works for you. You ain’t breaking my heart. There’s a lot of guys that say using ATF for after run eats seals and blah blah blah, and that’s a bunch of sheep dip too. So yeah, YMMV.
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Old 04-01-2019, 05:57 PM
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After run oil works real good, not sure what it is made of but seems to melt that stuff away
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Old 04-01-2019, 10:23 PM
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Originally Posted by BladeRunner24 View Post
After run oil works real good, not sure what it is made of but seems to melt that stuff away
is made from ATF
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Old 04-02-2019, 01:20 PM
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marvel mystery oil
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Old 04-02-2019, 01:54 PM
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MMO dries up with time. ATF doesnt and contains detergents and corrosion inhibitions that MMO doesn’t have. In reality, any petroleum oil that is free from solvents will do the job for a very long time. Any oil chemical that isn’t just a pure oil will likely have solvent in it and those will dry out, congeal, and eventually get gummy.

If you’re using the oils correctly, they will never get in contact with any of the silicone seals inside an engine. The oils inside a fuel tank of a methanol fueled engine will dissolve into alcohols and acetone readily and those solvents won’t harm silicone seals in the tank/lid. I’ve run fuel with some acetone in it even. The fuel tank nor the engine cared.

Anyway, the horse is definitely dead now.
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