This is topic How does an intank fuel pump not ignite the gasoline? in forum Tech Talk at Northern California Ford Owners  .


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Posted by gercolla1 (Member # 3068) on :
 
I am cetainly missing a fact or two but it impresses me how it does not just explode car as soon as I start it.
 

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Posted by 94gt (Member # 3060) on :
 
When you splice it in, you are supposed to use heatshrink it on there. yes, there's 12vdc going in there, but there's no actual spark happening.

Think of it like a spark plug, the dc voltage goes thru 1 side, arcs acros to the other side, i.e. sparkage. If you soldered the ends of a spark plug together, then the dc voltage wouldnt arc and no boom

since there's no break in the wiring in the fuel pump, you have no problem.

3 elements to a fire, ignition, supply, air... take any1 away, poof out goes the fire
 

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Posted by mtbaughs (Member # 4052) on :
 
Actually using heat shrink is not a good way to make this connection. In the past it's all I was taught to use until I started removing pumps I had done. Basically the gas eats up the heat shrink to where it expands and slides down the wiring leaving the soldered connections exposed. Could be a dangerous situation if air was present in the tank where the two connection might touch. Best to use high quality butt connectors with a good crimper instead.
 

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Posted by 94gt (Member # 3060) on :
 
my mistake, I have these splices that we use at my work that were made specifially to run thru fuel and grease and other crap and not corrode or break down.
 

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Posted by mtbaughs (Member # 4052) on :
 

quote:

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Originally posted by 94gt:
my mistake, I have these splices that we use at my work that were made specifially to run thru fuel and grease and other crap and not corrode or break down.

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Damn I need some of those LoL
 

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Posted by Teddy Tiger (Member # 2473) on :
 
It's not liquid gasoline that will explode, it's the vapors. I doubt there is a lot of current to create a spark between the gap of the terminals, but who knows. There's always a first for everything

I think you'd be relativly safe, but speaking from an electronics standpoint, if you're running an aftermarket in tank pump, I would solder the wiring, and use special heat shrink made for gasoline, butt connectors are murder when it comes to getting all of the required voltage to whatever device you're running.
 

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Posted by TRIX02GT (Member # 2844) on :
 

quote:

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Originally posted by Teddy Tiger:
It's not liquid gasoline that will explode, it's the vapors. I doubt there is a lot of current to create a spark between the gap of the terminals, but who knows. There's always a first for everything

I think you'd be relativly safe, but speaking from an electronics standpoint, if you're running an aftermarket in tank pump, I would solder the wiring, and use special heat shrink made for gasoline, butt connectors are murder when it comes to getting all of the required voltage to whatever device you're running.

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