[doc] Re: Gaydon and Noisy Fuel Pump

["Mike Bosworth" <mike.bosworth@xxxxxxxxxxxxxx>]

Robin Simpson wrote:

On another note, when I put the D away tonight, I notice the fuel
pump was unusually noisy - I presume that means its on its way out -
or shall I just smack it with a hammer ?

Hi

When i first got my car i had this all too common Delo problem with 
fuel pump noise especially when the tank was below half full, i can 
count at LEAST a dozen times i had to take off the fuel pump cover, 
disconnected the fuel pump and checked the 'question marked' shaped 
pic up hose in whatever fuel was left in the tank, i even replaced 
this hose with a NOS one SAME noise, put in the 'spring fix' still 
noisy and time after time getting more piss#d off when the noise came 
back. It was only when i finally got rid of this 'Heath Robinson' 
arrangement of the OEM pick up hose and baffle and replaced it with 
one from 'Special T' in the US that my problem has not come back. 
>From a lot of people i e mailed with over this item  ALL have had 
positive results, mine i have had fitted for 7 months now . I note 
Special T now have a newer pick up filter which basically keeps the 
filter mesh in a more oval cross section by the use of an internal 
mesh arrangement inside, whereas the OEM filter ends up looking like 
a pancake with very little surface area to actually draw fuel up, 
this maintains it shape and hence the correct flow rate through it.

The only thing negative i could ever find on it was that the baffle 
and filter is not now directly in the centre of the petrol tank, i 
dont see this as being importantant unless you drive around all the 
time with £5 worth of fuel up steep hills :) ... but im sure that my 
post will open up peoples other views on this....:)

Taking the pump in and out for future maintainence is a breeze the 
baffle, also in my opinion retains the fuel better due to less holes 
in it .

One more thing, on the black flexi hoses that 'loop' round off the 
pump and then connect onto the metal lines, check these are not 
pressing or rubbing against the back of the removable cover, again 
this connection is a source of noise transmission, on my car i stuck 
some foam pads on the back of this cover.

http://www.specialtauto.com/delorean-parts/fuel-injection.html



Kind Regards

Mike
#2001/403


--- In doc-uk@xxxxxxxxxxxxxxx, Martin Gutkowski <martin@xxxx> wrote:
> Robin Simpson wrote:
> 
> > On another note, when I put the D away tonight, I notice the fuel
> > pump was unusually noisy - I presume that means its on its way 
out -
> > or shall I just smack it with a hammer ?
> 
> 
> When you've been stuck in traffic in hot weather, and when you're 
under 
> half a tank, they often make a terriffic racket. Don't worry about 
it 
> unless the car starts to buck around. Mine was singing like a 
champion 
> when we arrived in LeMans, after being stuck in traffic for an hour 
in 
> 30+ degree heat.
> 
> Martin




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