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fuel pump problem

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Old Apr 11, 2012 | 10:28 PM
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Default fuel pump problem

A friend of mine stores his 93 Corvette next to my 99 in my garage during the winter months. Last week he wanted to use it over Easter. No fuel pressure. I figured it was the pump. Removed the pump and found all the rubber parts that were connected to the pump had become soft and became mush. This included the short hose from the pump to the fuel line plus the rubber jacket that surrounds the pump. I replaced the pump and cleaned as much of the tank as I could, but I am wondering if the new type of gas that we are using is the problem and will it just happen again? He said he had replaced the original pump about four years ago. Any suggestions about using an additive that will prevent this. He said he added Seafoam just before storing the car.
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Old Apr 11, 2012 | 11:52 PM
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No.

The pump died of old age and / or lack of use, or was a lower quality replacement to begin with. Ethanol blends aren't hurting them.
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Old Apr 12, 2012 | 12:35 AM
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The hose between the pump and the steel fuel line needs to be SUBMERSIBLE hose. Regular fuel line is only rated to keep the fuel INSIDE. The outer rubber is not resistant to gasoline. He needs some of this stuff:

http://www.amazon.com/Gates-Rubber-C...4205218&sr=1-1

Prepare for sticker shock: that price is for ONE FOOT! The price has come down -- I paid around $26 for the exact same part number about 5 years ago.
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Old Apr 12, 2012 | 12:43 AM
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yup mine died from lack of use
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Old Apr 12, 2012 | 09:28 AM
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Originally Posted by Frizlefrak
No.

The pump died of old age and / or lack of use, or was a lower quality replacement to begin with. Ethanol blends aren't hurting them.
No, the pump itself is still good. He is now keeping it as a spare. It was the rubber components that connected to the punp that all melted.
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Old Apr 12, 2012 | 09:33 AM
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Originally Posted by Cliff Harris
The hose between the pump and the steel fuel line needs to be SUBMERSIBLE hose. Regular fuel line is only rated to keep the fuel INSIDE. The outer rubber is not resistant to gasoline. He needs some of this stuff:

http://www.amazon.com/Gates-Rubber-C...4205218&sr=1-1

Prepare for sticker shock: that price is for ONE FOOT! The price has come down -- I paid around $26 for the exact same part number about 5 years ago.
It is now 32.40 a foot, because that is what I replaced it with. Dayco part number 80160 or NAPA H209. What anout the black insulator type covering that goes around the pump? That was completely melted. Could not find a replacement for that.
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Old Apr 12, 2012 | 09:58 AM
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Originally Posted by ssrodder
No, the pump itself is still good. He is now keeping it as a spare. It was the rubber components that connected to the punp that all melted.
Those too died of old age. Pulsator failure is common even in areas not using E10 or any of it's variants.
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