Walbro 255 lph screaming

[Anthony Del Valle]

So as the title states, my walbro 255 is screaming, it is making a really loud noise. It is rewired. The pump was working properly about 5 to 7 montsh ago. I haven't turned the car on since, could the car sitting for that long made the fuel pump go bad?

 

[danl]

I’ve never heard one talk let alone scream. Your car may be possessed.

Is your fuel level perhaps low? They are louder when there is less fuel in the tank. What kind of fuel are you using? If it’s been sitting 5-7 months hopefully it does not have much ethanol in it.

You may want to take a video with audio and post it. It’s also not a bad idea to pull the hangar and inspect the pickup sock for clogging.

 

[Anthony Del Valle]

So this is the condition of the pickup sock. I had installed a new sock when I said I last turned it on. Maybe I turned it on a couple more times, but that was it, and the 5 to 7 months passed by. What could cause the sock to be so dirty and cloggled?

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[danl]

I wouldn’t say that is “clogged”. What fuel is in the tank. I don’t mean to be dismissive, but just trying to learn what your issue is.

Any audio samples?

Is it lean in boost?

 

[Anthony Del Valle]

It had 93 fuel on the tank. But after installing a new pickup sock, and removing the old fuel, the fuel pump is working properly and is not making the loud noise it was making before.

 

[danl]

In general, I prefer to put fuel in the tank, not on it. Still, I’m glad that this along with the other items worked for you.