Re: [DML] Louder Fuel Pump Buzzing after Replacing Fuel Hoses at the Fuel Pump -- Sound Deadening Help

[Johnny Sawyer <johnny.sawyer@xxxxxxxxx>]

Wayne, I know it sounds silly, but make sure those two lines are not laying 
down on the fuel tank. They should be in an upright position arching to the 
passenger side hard lines and facing away to the left in/out of the boot 
cover.
 Also, if you moved the pump (or removed it) it's highly possible you 
kinked/disconnected the pickup line in the tank.
 Johnny
5518

 On 9/6/05, Wayne Wagner <dmc-2447@xxxxxxxxxxxxx> wrote: 
> 
> Hello Group!
> 
> I just replaced my fuel hoses at the pump this past Monday with the
> orange hoses with the teflon liner.
> 
> Overall, I'm happy with the teflon hose product, except... after
> finishing the job, I noticed that my buzzy fuel pump was sounding like a
> giant mosquito when the sound of the engine is not covering it up. It
> was buzzy before, but now it is definately louder... on the verge of
> being annoying. Given that the difficulty in bending the hoses made
> things tight in the space, the hoses are definately touching the access
> panel and maybe the bulkhead in that space. So, I think the buzzy sound
> from the pump is getting transfered more efficiently to the bulkhead via
> the stiffer hoses.
> 
> I think a little sound dampening is in order (padding the areas of the
> access panels/bulkhead that the new hoses are touching). Anybody have
> experience in dampening/isolating fuel pump noise? What's the opionion
> on urethane foam? I think I can harvest appropriate chunks of it from
> test equipment packaging. Or is this material too dense and will not
> dampen much sound? Any other dampening options?
> 
> On the upside, I feel that I am getting improvement in acceleration
> performance since the fuel hose job. Before, I used to get some degree
> of power hesitation under heavy accelleration. Since my type of daily
> driving didn't require me to drive like a maniac, I've learned to work
> around that. I cannot fully explaine the improvements just yet. For
> now I am speculating that there was partial blockage in the old hoses,
> or some other narrowing of the hose cross section... I haven't autopsied
> the hoses yet to see, but I know that one of the return line fittings
> had gunk in it like cholesterol buildup in an artery. All fittings are
> now new except for the supply side.
> 
> Regards,
> Wayne / VIN#2447
> www.AA9DY.com <http://www.AA9DY.com>


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