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



Craig
Bosch and I think all the different brand manufactures of pumps have not
been able to fix the buzzing noise. I can only tell you that as the
temperature goes up with the gas in the tank the pump noise will normally
increase. You may find a few that it won't happen to but is one reason I
have developed Items that will help keep the heat off the tank. You can test
by adding some fresh gas and the loud buzzing will go away.
You can install an Air Dam and that will knock 20 to 30 degrees off the tank
temp and a new heat shield for the bottom of the tank that I will have on
the market soon. 
Check with some of the guy's in Arizona where they have to pull over to the
side of the road and let everything cool down to keep going. 
John Hervey
www.deloreanautoparts.com



-----Original Message-----
From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of
dadoc2791
Sent: Friday, February 29, 2008 9:42 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



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