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Is it safe to repair a gasoline fuel pump?

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A

autoviz

Junior Member
Hi,
Can replacing the propellers in the fuel pump lead to a something disastrous? It is visible that the propellers are ruptured.
Car is a 1996 bluebird and has the fuel pump inside the fuel tank.

These are my concerns,
-We dismantled an unused pump to see the gasoline goes actually inside the fuel pump. So can it start a ignition/explosion as there are brushes (which means electric sparks) and gasoline go passing them?
-I know that the liquid gasoline is not inflammable, but what about the gasoline fumes inside the fuel pump? There are oxygen in the tank and also the pump is not always fully submerged in the gasoline.
-How these things can be secure? someone please explain me what's the story there.
Thanks!
 
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Are internal replacement parts available for a fuel pump in your land? No? Then it's a moot point. Just buy a new pump.
 
You do realize first, you'll probably never find a rebuild kit for your pump, so you'll simply have to buy a new one.

Second, while true the pump is an electric motor that gets submerged in a flammable liquid, not all electric motors are equal. Fuel pumps are designed to be in such an environment and not to compromise safety.....the motor's inner workings are isolated and not exposed to the fuel. Fuel pump motors aren't like shop vacuum motors. Otherwise, if fuel pump motors were as exposed as drill motors or shop vacuum motors, vehicles with in tank pumps would be blowing up on a daily basis.

In fact, in an even scarier thought, the in tank fuel pumps are designed to use the gasoline as a cooling fluid for the electric motor, which is why people that chronically keep very low levels of gas in their tanks, below 1/2 full, very often suffer pump failures vs. those people who keep >1/2 full tanks of gas.
 
Heh, nice tags.

I'd just replace the pump - it shouldn't be too expensive...you can find Walbro 255's for ~$90 USD. Discount auto parts OEM replacement shouldn't be too bad, and it'll be far safer than an attempted DIY-fix (assuming there's no rebuild kit available).
 
Hey thanks for the replies.

We found the replacement of propellers are impossible as the propellers of the two pumps do not match. So will have to replace the pump.


As Meghan54 mentions:
the motor's inner workings are isolated and not exposed to the fuel.
Click to expand...
no, actually the gasoline goes through the motor, it goes through the armature, brushes and all the stuff. But the coil is not exposed to the gasoline.

There is no way to upload a picture here (?) else I could have attached some pictures.
 
autoviz said:
Hey thanks for the replies.

We found the replacement of propellers are impossible as the propellers of the two pumps do not match. So will have to replace the pump.


As Meghan54 mentions:

no, actually the gasoline goes through the motor, it goes through the armature, brushes and all the stuff. But the coil is not exposed to the gasoline.

There is no way to upload a picture here (?) else I could have attached some pictures.
Click to expand...

Upload to imgur.com and then post here
 
jlee said:
Heh, nice tags.

I'd just replace the pump - it shouldn't be too expensive...you can find Walbro 255's for ~$90 USD. Discount auto parts OEM replacement shouldn't be too bad, and it'll be far safer than an attempted DIY-fix (assuming there's no rebuild kit available).
Click to expand...

This
 
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