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Old 08-19-2008, 03:14 PM
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Electric Fuel pump needs a return line ?

I am working on 1968 Nova with a 350 and 4 barrel carburetor. I have installed a electric fuel pump back by the tank and ran a new fuel line. I also put in a new tank sender and fuel tank with a single line out.

My first question is do I need a return at the carburetor to even out the pressure on the Fuel pump?

Ware is the best place to wire in the fuel pump, on what circuit?

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Old 08-19-2008, 04:05 PM
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What you need is a fuel pressure regulator...set so that the pump doesn't overpower the needle/seat, not a return line. That is if you have a carburetor...
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Old 08-19-2008, 04:09 PM
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You don't need a fuel return. If the pump is putting out more then 6 to 6.5 pounds, a regulator will be a good fix for that.

How much does the pump draw?

Wire the pump so it's only on when the key is in the "run" position. You can use a test light on the fuse box to find one that comes on when the key is on.
Or you can get fancy and install a relay that is triggered by an "accessory" (on when the key is on the run position) source, then have the relay send full battery voltage to the pump. Be sure to fuse the lead close to the source.
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Old 08-19-2008, 09:06 PM
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Thanks for the info

I like to get all the fact before I start slapping thing to together, cost to much to get it wrong.
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Old 08-20-2008, 12:29 AM
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electric fuel pump

Holley has a relay kit,order one and save yourself a lot of problems also put a good quality filter before the pump(ask me how I know )
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