Rain in fuel tank.

Gaspasser

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My son found the fuel tank cap on the diesel transfer tank. I last filled prior to 3 days of rain. I have not run it since before the rain. So besides kicking myself for being an idiot, what actions can I take to avoid troubles? Drain fuel tank? If i do, what do i do with the contaminated fuel? Any additive or treatment I can use? Thinking running it and draining water trap is not a great idea. I'll accept all flaming insults as punishment. I deserve it. Thanks.
 

dirtydeed

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Ugh.

If you're able to drain (water) from the bottom of the tank, I'd do that and hopefully the water would be the first to be drained. Once the bulk of the water is out, treat the tank with biobor.

Do you have a water separator on the tank/pump as well?

I'd also suggest using a Mr Funnel (its a water separating funnel) when fueling anything up. I use one every time for both diesel and gas and have only had 1 water issue (which I created when hosing off dust around the tractor fuel tank).

oh, the leftover found in the Mr Funnel is used as spot "weed Killer".
 
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Gaspasser

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Ugh.

If you're able to drain (water) from the bottom of the tank, I'd do that and hopefully the water would be the first to be drained. Once the bulk of the water is out, treat the tank with biobor.

Do you have a water separator on the tank/pump as well?

I'd also suggest using a Mr Funnel (its a water separating funnel) when fueling anything up. I use one every time for both diesel and gas and have only had 1 water issue (which I created when hosing off dust around the tractor fuel tank).

oh, the leftover found in the Mr Funnel is used as spot "weed Killer".
Thanks. Yep, both a water and particle filter on 100 gal transfer tank. Just got off phone with dealer. Recommends draining all fuel. Apparently on tractor, have to remove a plate to expose tubing connector that communicates with both tanks as that is the low spot. Kick, kick, kick.
 

Gaspasser

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My son found the fuel tank cap on the diesel transfer tank. I last filled prior to 3 days of rain. I have not run it since before the rain. So besides kicking myself for being an idiot, what actions can I take to avoid troubles? Drain fuel tank? If i do, what do i do with the contaminated fuel? Any additive or treatment I can use? Thinking running it and draining water trap is not a great idea. I'll accept all flaming insults as punishment. I deserve it. Thanks.
Oh. I see how my post is confusing. The transfer/storage tank is fine and was capped. The tractor fuel tank was the one I left uncapped. It was laying on top of the storage tank.
 

Russell King

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For the fuel in the tank I would agree that it is best to drain it out. There may be some way to pump it out but then I would still want to drain the lines under the tank.

That fuel could be used as bonfire starting fuel if you have fires to start. You can “polish“ it by pour it through a water separating filter or if you have a filter and water separator on your storage tank you can just circulate the fuel through the storage tank nozzle back to the storage tank fill port.
 
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Gaspasser

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For the fuel in the tank I would agree that it is best to drain it out. There may be some way to pump it out but then I would still want to drain the lines under the tank.

That fuel could be used as bonfire starting fuel if you have fires to start. You can “polish“ it by pour it through a water separating filter or if you have a filter and water separator on your storage tank you can just circulate the fuel through the storage tank nozzle back to the storage tank fill port.
Thanks. I do have multiple piles of slash and much more to pile up into "teepees" to burn. I do use diesel soaked cardboard or rags to start up using care not to let diesel get into soil. Tractor holds 9 gallons and is full so will have more than i need as fire starter. I had the same idea about pouring the drained fuel into my storage tank and allowing the filters to do their work but is it worth the risk? I could try draining aliquots of fuel from the bottom of the tractor tank and checking for water levels in a clear container. Theoretically, water will drain out first so when I see no more water/fuel partition, I can assume the water is drained. I did check out Mr. Funnel as suggested by Dirty Deed. Might be worth a try. Thanks for all the help guys. Hoping this is the first and last time I pull this stunt.
 

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NCL4701

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I had the same idea about pouring the drained fuel into my storage tank and allowing the filters to do their work but is it worth the risk?
Is it worth the risk to try to clean it up to use it as fuel? 9 gallons? NO. Not a close call. Risking running water, even a small amount, through the injectors to save less than $40 worth of fuel which you could just as well use to burn slash piles just doesn’t add up.
 

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Left mine off before rain once too. PITA draining the tank, so now I've made a habit of setting the cap in the seat.

Not sure why I couldn't just develop a habit of replacing the cap. 🤷‍♂️

I just used the fuel on burn piles as well.

Good luck,

Greg
 
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John T

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why not just disconnect the fuel hose at the engine..... Then let the electric fuel pump do it?
 
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Gaspasser

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why not just disconnect the fuel hose at the engine..... Then let the electric fuel pump do it?
Ty. Good thought. I could also siphon out the tanks from above where it's easier and then drain the balance by draining at the bottom or using the fuel pump as you suggest. Will take the task on tomorrow and report back.
 

Gaspasser

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So, spent the day under my tractor doing idiotic move mitigation ( see above ). Tried siphoning out tank from filler tube to decrease volume but was only able to get out about 2.5 gallons out. Siphon tube could not reach the bottom of the convoluted right tank. Turns out the hose that connects right and left tanks has a check valve so draining tank completly is not possible this way. Water sinks below fuel so still needed to drain tanks from bottom. Bought a 20 gallon concrete mixing tray from HD to catch fuel. Removed protective u-channel like plate covering hose between tanks. 12 mm socket to remove one bolt on right and 2 attachment points on left. Struggled to reach bolt securing hose clamp on left but finally got it with 10mm socket. Frustrating position of clamp. Must remove left side of hose to drain both tanks as hose holds a check valve preventing back flow from left to right. Tank fills from right, transfers to left. Fuel is supplied to engine from left tank. Drained approx 11 more gallons into tray. Pumped from tray to gerry cans, and labeled cans as "contaminated." Will use for burning brush piles. Cleaned up components and reassembled. Took way too long... most of day gathering tools and doing the deed. Will never forget to put fuel cap on again. Will post pics later.
 

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JasonW

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Was you able to see any water in the drained fuel?
A days worth of work would be better than the possibility of damage to the injection pump.

Really that’s what the water separator and filter are supposed to catch, but why chance it knowing water got in.
 
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Gaspasser

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Was you able to see any water in the drained fuel?
A days worth of work would be better than the possibility of damage to the injection pump.

Really that’s what the water separator and filter are supposed to catch, but why chance it knowing water got in.
Yes. To be honest, we would have had to be very careful to draw from lowest layer of drain pan first to get an accurate measurement of water. But we wanted to get done before dark and so did not take great pains to do so. But I did place some of the turbulent aspirated fuel into a clear container and sure enough, there was some water. Tough to see in following pic but there is bit in bottom of jar. If I wanted to be strictly scientific about it, I could separate water from the 3 gerry cans to measure but I've lost alot of time having to fix my error and need to get back to my projects before winter comes to kill us. Lol. Mabye I'll save fuel for a wintertime experiment.
 

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