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Fuel geyser from blowing into tank?

M

mkirsch

Well-known Member
Last Sunday evening I was watching Alaska the Last Frontier on Discovery. It's about as "real" as reality shows get, but after a few seasons I think they're starting to "produce" dramatic situations.

Old Otto was having problems getting his John Deere tractor started. Apparently it wasn't getting fuel. He took the cap off the gas tank and blew into it, trying to get fuel to the carburetor.

When he stops blowing, about a gallon of fuel comes gushing out of the tank and right in his face!

Is that realistic? Can you pressurize a fuel tank enough just by blowing into it that it will shoot a geyser of fuel when you stop blowing?
 
(quoted from post at 14:45:45 11/12/13) Last Sunday evening I was watching [b:0f19b33809]Alaska the Last Frontier on Discovery. It's about as "real" as reality shows get,[/b:0f19b33809] but after a few seasons I think they're starting to "produce" dramatic situations.

Old Otto was having problems getting his John Deere tractor started. Apparently it wasn't getting fuel. He took the cap off the gas tank and blew into it, trying to get fuel to the carburetor.

When he stops blowing, about a gallon of fuel comes gushing out of the tank and right in his face!

Is that realistic? Can you pressurize a fuel tank enough just by blowing into it that it will shoot a geyser of fuel when you stop blowing?
Click to expand...
s all these Alaskans were as dumb as the ones on the show then there would've been only bears and moose left by now. :wink:
The show "mountain man" is just as stupid :roll:

Actually that goes for 99% of these reality shows
 
I usually blow into the filler neck with my mouth and "pressurize" it when I change filters, to bleed it faster. I did learn early on to release the pressure slowly, because if you just pull away and let the pressure go all at once, you can get a little splash of diesel on your face, but certainly not a gallon.
 
I did not see the show but I have done that. The only tractor that I have ever seen that will do it is a M John Deere. The filler neck has a tube down in the tank about half way, if the tank is over half full and you blow in it you better let the pressure of slow or you will get a faceful. I DID IT that is how I know.
 
I dumped a 12oz. container of gumout fuel system cleaner in a very heat soaked IH 350U with 7 gallons of fuel in it. The gumout changed the vapor pressure and all but a gallon came out in a geyser all over the tractor, me and the surrounding 20 foot radius. I ran in a zig zag path for about 1/4 mile dripping gasoline all the way. I had to strip and hose off with cold water and soap before entering the house. It was an almost toast. Jim
 
Actually that does make sense !! Now that you mention it I had forgot about the way those necks are made.
I thought it was some kinda special effect for TV too. But you are right about that neck. And if full and you blow into it there will be no where for the air to escape at the top.

Time for ole Otto to fix his cobbed up fuel line and clean his sediment bowl ( if he even has one )All I saw was the cobbed up line/hose.
 
(quoted from post at 15:58:59 11/12/13) I did not see the show but I have done that. The only tractor that I have ever seen that will do it is a M John Deere. The filler neck has a tube down in the tank about half way, if the tank is over half full and you blow in it you better let the pressure of slow or you will get a faceful. I DID IT that is how I know.
Click to expand...

AHA!

The tractor he was working on was a John Deere MT, the row crop version of the M.
 
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