[DML] Re: Fuel Pump "Buzz"
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[DML] Re: Fuel Pump "Buzz"

The same scenario could be said for a soft suction hose that collapses
under vacuum when it gets hot. Could also be in conjunction with
debris in the tank. Bottom line is if the pump can't get full flow it
will get hotter and noisier (the fuel cools and lubricates the pump).
In any case you will be going in there and will discover the problem.
If the pump is run for any length of time making noise it is probably
taking bigger toll of it's life so it is important to fix a noisy pump
quickly or it will soon die. If the tank is full of dirt then you
should also change the fuel filter because the fuel gets recirculated
so whatever is in the tank is in the filter!
David Teitelbaum
vin 10757

--- In dmcnews@xxxxxxxxxxxxxxx, "Tom Tait" <TTait@...> wrote:
> The following description was offered by Steven in Houston when I
called to report the same problem.
> If there is contamination in the fuel tank, it will get sucked
against the filter screen inside the tank.  More and more debris will
accumulate against the screen, and the pump will get louder as fuel
flow is restricted.  When you shut the car down, even with the check
valve, eventually the suction at the intake of the pump will fall off
and some debris will float away agian loose in the tank, until the
problem restarts next time.
> Basically the pump makes more noise when it gets warm it seems, that
can be from a hot tank so the pump does not stay as cool, or from an
overheating pump which is working too hard. If your car sputters or
has low power when the whine gets bad suspect debris.
> Tom
> -----Original Message-----
> From: dmcnews@xxxxxxxxxxxxxxx on behalf of dadoc2791
> Sent: Fri 2/29/2008 7:41 PM
> To: dmcnews@xxxxxxxxxxxxxxx
> Subject: [DML] Fuel Pump "Buzz"
> The other day I noticed that my fuel pump has begun making noise - a 
> Buzzing sound, about 3-5 times as loud as it normally does when 
> running.  I found today that when cold, it's completely quiet.  After 
> being driven about 1-1½ hours, it begins getting louder.  The engine 
> runs perfectly at any speed so I know the pump is delivering ample fuel 
> and pressure but I'm concerned about it.  I've ordered a new pump from 
> John Hervey and figure I'll keep this one as back-stock, in case it's 
> needed in a hurry at some later date.
> Any ideas on what might cause this added noise to a pump that otherwise 
> seems to be operating perfectly?
> Craig Werner
> 07181
> [Non-text portions of this message have been removed]

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