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Registered
Join Date: Jul 2003
Location: Valencia Pa.
Posts: 8,841
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Do you think a in fuel tank short, could cause an explosion, or fire ?
I ponder this every time I do an in tank fuel pump . Yesterday, I pulled one out of a 2009 cobalt, where there must have been high resistance right at the fuel pump connector on the pump submerged in fuel .
It got hot enough to melt the plastic connector, and turn the metal spades, purple . Even though it is submerged, I am sure that under certain conditions, fuel would slosh and expose this to oxygen . Is it possible ? I have never heard of it happening, and this is the only time I have ever seen anything like it . 
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02-16-2021, 10:59 AM
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Did you get the memo?
Join Date: Mar 2003
Location: Wichita, KS
Posts: 32,133
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Just because it is hot doesn’t mean it would create a spark. Just being hot won’t ignite anything.
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02-16-2021, 11:13 AM
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So is it safe to do the work in immersed fuel?
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02-16-2021, 11:16 AM
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I see you
Join Date: Nov 2002
Location: NJ
Posts: 29,869
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If the pump is immersed then there's no O2 to combust with...right?
 So keep the pump submerged and no problem...maybe? I rode my R1100S 14 years with that setup right in front of my gentleman bits.
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Si non potes inimicum tuum vincere, habeas eum amicum and ride a big blue trike. "'Bipartisan' usually means that a larger-than-usual deception is being carried out." |
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02-16-2021, 11:27 AM
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Still Doin Time
Join Date: Nov 2004
Location: Nokesville, Va.
Posts: 8,225
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Not in that case, as said above oxygen has to be present + liquid doesn't ignite, the fumes do w/oxygen.
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02-16-2021, 11:43 AM
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Join Date: Nov 2003
Location: secure undisclosed locationville
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Twa 800
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1971 R75/5 2003 R1100S 2013 Ural Patrol 2023 R18 |
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02-16-2021, 11:54 AM
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Get off my lawn!
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Uncounted millions of cars have the fuel pump inside the gas tank for a reason.
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Glen 49 Year member of the Porsche Club of America 1985 911 Carrera; 2017 Macan 1986 El Camino with Fuel Injected 350 Crate Engine My Motto: I will never be too old to have a happy childhood! |
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02-16-2021, 11:57 AM
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Quote:
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02-16-2021, 04:42 PM
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Slackerous Maximus
Join Date: Apr 2005
Location: Columbus, OH
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Quote:
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02-16-2021, 04:58 PM
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Join Date: Apr 2010
Posts: 3,003
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In the tank the mixture is too rich to burn.
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02-16-2021, 05:05 PM
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Join Date: Jan 2013
Posts: 48
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The fuel tank operates above the upper explosive limit ... insufficient oxygen for combustion / explosion
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02-16-2021, 05:11 PM
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Senior Member
Join Date: Feb 2000
Location: Lacey, WA. USA
Posts: 25,305
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All electric fuel pumps for gasoline are gasoline-cooled.
There is no O2 in liquid fuel. I'd guess there is very little O2 in the fuel tank at all.
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Man of Carbon Fiber (stronger than steel) Mocha 1978 911SC. "Coco" |
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02-16-2021, 05:35 PM
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Location: Charlottesville Va
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Twa 800
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Greg Lepore 85 Targa 05 Ducati 749s (wrecked, stupidly) 2000 K1200rs (gone, due to above) 05 ST3s (unfinished business) |
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02-16-2021, 06:08 PM
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Join Date: Jun 2008
Location: LEEDS ,UK
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Spark erosion machines work in paraffin
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02-17-2021, 12:06 AM
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Location: Lake Oswego, OR
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Interesting. Never thought of this.
Upper limit. Cool. |
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02-17-2021, 03:45 AM
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Lots of snow Porsche away
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Quote:
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02-17-2021, 07:19 PM
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Join Date: Jun 2000
Location: bottom left corner of the world
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Not inside the fuel tank, but when I was replacing the fuel pump under the car (lucky me - not) I got the perfect air to fuel ratio, and got a big orange flame/combustion.
It burnt the hair off one side of my head and left a sore on the side of my nose and above one eye. i had a fire extinguisher on hand so I saved the car then me in that order LOL I was trying to get the fuel pump working when it sprang into life with a spark on the terminal and shot fuel out that was ignited by the big orange flame. |
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02-17-2021, 07:49 PM
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You do not have permissi
Join Date: Aug 2001
Location: midwest
Posts: 39,806
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I've heard they weld NG pipelines with the gas on.
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Meanwhile other things are still happening. |
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02-17-2021, 07:50 PM
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Location: Sweden
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Fun fact: E85 in the winter might push the tank vapours under upper explosion limit.
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Thank you for your time, |
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02-17-2021, 11:44 PM
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I see you
Join Date: Nov 2002
Location: NJ
Posts: 29,869
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Quote:
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Si non potes inimicum tuum vincere, habeas eum amicum and ride a big blue trike. "'Bipartisan' usually means that a larger-than-usual deception is being carried out." |
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02-18-2021, 04:59 AM
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Lexus RX350
Carrera
Fun Fun Fun
