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03-16-2015, 10:25 PM
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Senior Member
 
Join Date: Oct 2012
Location: Miami, Florida
Posts: 959
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Walbro 255 fuel pump
Hello to all. I'm using the Walbro 255 external pump for my LSx fuel delivery needs. Once the engine reaches normal operating temperatures, the Walbro 255 starts to whine loudly. Because of this, I replaced it with a new unit. The second unit runs loudly also. Is this normal? What fuel pumps are you all using? The msd 2555 is a viable option but the 5/16 outlet size has me worried. The Walbro 255 has -6an inlet and outlet size. Thanks for your help.
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