fuel pump hum

[jlat]

hello; I had a Walbro FP installed last yr. I never heard it run till recently. I never heard my stock one and I never hear my recently replaced aftermarket FP in my van. Are Walbro's more prone to noise? I always thought when the pump started making noise it was on it's way out.
IBBY

 

[turbota633]

That's one thing I noticed immediately after I changed my stocker out for the Walbro 340, that thing is audible. Louder on the prime prior to starting the engine, it has a humming/ringing sound to it at idle as well.

 

[tzque]

I noticed mine last night . I think it is based upon how much fuel is in the tank . I dont hear it until below a quarter

 

[meanchicken]

Always keep at least 1/4 tank or more in there for a few reasons....keeps the pump cooler...you won't hear the pump as much....pump won't have to work as hard...pump life will be greater...

 

[DSEROVY]

I noticed mine too -was a little worried at first, but after poking around with the search it appears to be common.

 

[Roger]

I can't hear my Supra / Denso, unless I get my ear next to the tank.

 

[87GNSteve]

It is a common characteristic for the Walbro pumps to have a loud whirring sound.
Like Roger mentioned my Supra Denso pump going on 3 years is ultra quiet.

 

[jlat]

hello; Tell more about that Supra FP. Is it about the same as a Walbro?
IBBY

 

[87GNSteve]

Not the same as the Walbro. It requires some modifications to work right.
But well worth it.

 

[jlat]

Not the same as the Walbro. It requires some modifications to work right.
But well worth it.

hello; Tell me more on what you have to do to install the Supra pump.
I see there's a harness you can buy to make it easier but does it take moding the tank mounting?
IBBY

 

[turbofabricator]

The Walbro pumps are louder than most pumps. The new DW pump is very quiet and installs fairly easy. I had to cut about 1/3 of the lower support ring to clear the supplied sock. Make sure you use a long enough hose to push the pump into the support ring and use a zip tie to hold it from sliding down causing the hose to slip off. (ask me how I know that)