Fueling & Injection Fuel Pumps | Injectors | Rails | Regulators | Tanks

WTF is this noise?

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Old Aug 9, 2007 | 08:34 PM
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Default WTF is this noise?

I installed dual intank walboro 255's, removed the EVAP system, and am using the EVAP line for a return with a rail mount regulator. The car starts right up and seems fine. I haven't actually driven it though.
The noise is when I turn the key to "run", and is only when the pumps are on, or priming. The noise is definitely coming from under the hood. I have the pump relays wire directly to the battery, when I unhook them the noise stops. I can't here the noise with the car idling, it may still be there though, it's kind of loud.
Here's a sound clip, in case you can't tell what is going on here it is: key on, key off, key on, key off, start car, turn off, key on, key off.

click
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Old Aug 9, 2007 | 08:59 PM
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I think I might just be being paranoid. Standing next to the car reaching in turning the key it sounds like the noise is coming from the front of the car. I just had my old lady turn the key while I looked around. It sounds like it is the pumps themselves, I got under the tank and it's coming from the tank. These pumps sure are a LOT louder than the single Racetronix pump I had in before.
I also tried closing the door and starting the car. I can still just barely here the pumps running over the engine. Is that normal with this kind of fuel system?

Last edited by calongo_SS; Aug 9, 2007 at 09:14 PM.
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Old Aug 10, 2007 | 01:41 AM
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Anybody else have dual 255's that make this much noise?
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Old Aug 10, 2007 | 06:32 PM
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yes my twin pumps are loud, but I only have one on full time, the other is on a hobbs switch.
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Old Aug 10, 2007 | 07:12 PM
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I've decided to do the same thing.
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