Re: [DML] Fuel Pump Noise

[mike.griese@xxxxxxxxxxxxxxxx]

Dick - My car does this too, but closer to an empty tank than yours.  I 
have a couple of observations, but no real solutions.  First, is that a 
tank that is less than full makes for a good speaker enclosure.  It's plastic, 
and you have a vibrating mass hanging right at one of the less rigid sections 
of the tank.  Higher temperature seems to help the fuel cavitate better within 
the pump, which increases the noise.  Another thing to note is that the bottom 
of the pump hangs about halfway into the tank, which indicates that the fuel 
itself provides some audio insulation and probably cooling to the pump.  I 
haven't been able to determine if the pickup hose winds up contacting 
the tank.  If it does, that could be another source of noise being injected
to the fuel tank.

Short of keeping the tank more than half full, it's not much help, but maybe 
it will spark some ideas for solutions...

--
Mike


-------------- Original message from Dick Ryan <deloreanbiker@xxxxxxxxx>: -------------- 


> 
> 
> Guys 
> 
> As a D owner since 1982 and active on the list since 
> its inception, you might think I'd have all the 
> answers. Not even close. One problem that has 
> irritated me off and on since I first owned a D is 
> that damn fuel pump noise. 
> 

[Non-text portions of this message have been removed]






To address comments privately to the moderating team, please address:
moderators@xxxxxxxxxxx

For more info on the list, tech articles, cars for sale see www.dmcnews.com

To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/dmcnews/

<*> To unsubscribe from this group, send an email to:
    dmcnews-unsubscribe@xxxxxxxxxxxxxxx

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/