Question about 1996 Chevrolet S-10 Pickup

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Little Black Box, Fuel Pump, Fuel Lines

I replaced the fuel pump and fuel filter on my 1996 Chevrolet S10. (As well as some gas lines.) When I start the truck, fuel is leaking from a small black box that is located under the bed of the truck, connected to the fuel pump and the charcoal box. This small black box has a small red tab, as if there may be some sort of switch or relay inside, I am not sure why the fuel is leaking or what this little black box is. Can someone please help?!

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It sounds like you have a line hooked up to the wrong spot, and that little black box sounds like the charcoal canister, which is used to filter out fuel vapors. it sounds like either the supply or return line has been hooked into the vapor line. retrace your steps, largest diameter line is supply, medium is return, smallest line is vapor line. good luck!

Posted on Jun 03, 2010

  • Geoff Walton Jun 03, 2010

    sorry not charcoal cannister, probably purge valve.

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Just cranks

Posted on Nov 09, 2010

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The black box is a filter that will need to be replaced if leaking gas

Posted on Jun 03, 2010

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