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Relay on In-Line Walbro problems...

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Old 06-24-2009, 06:06 PM
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Default Relay on In-Line Walbro problems...

I'm trying to figure out why the inline pump keeps killing my relays.
Ive got a walbro 255 in-tank, and another in-line for high boost.

Im no electrical genius, so I re-did the connections and re-sanded the ground down to bare metal.

its using a 4 pin, 30amp relay, and about every time I turn up the boost, it shells one.

Also, when I get on it on high boost, it drops fuel pressure to about 30ish when I hit 14#, is the pump weak/going bad, or do I need something bigger.
Anyone have any ideas/fixes?

The setup is a front mount 76mm, running 6, 10, and 14psi depending on setting, 60# injectors, and dual walbro 255's, on a 347.

Does anyone have both pumps on all the time?
Old 06-25-2009, 12:24 PM
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You are running the second pump inline? You are not going to pull any additional fuel through the first pump.

Give me a call I can help you get the correct setup for your needs.
Old 07-16-2009, 02:34 PM
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Why dont you put a external fuel pump on. You will get better results.




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