[DML] Re: TESTING THE FUEL ACCUMULATOR
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[DML] Re: TESTING THE FUEL ACCUMULATOR



I have a theory that may solve the "partial" bad accumulator. If the
output nipple (the one that will return fuel leaking from a bad
diaphram) is plugged up with chunks of the failed diaphram, your rest
pressure will remain high for a while longer than if it was not
plugged up. Realize the rest pressure spec is the MINIMUM and that it
should hold up a lot longer. If it is at or close to the minimum then
you need to suspect the accumulator, a leaking check valve on the fuel
pump, or a leaking Primary Pressure Regulator. In fact, it could be
all of the above! It is rare but in a lot of cases a car will suffer
from multiple problems. Fixing one thing does not always "cure" the
symptoms. Especially if the fuel system has origonal parts and is
contaminated. Testing the accumulator on a test rig will not tell you
about the other parts of the fuel system. And testing the rest
pressure on the car will not tell you which of the three parts is bad
either! One thing you can be sure of though is if you have an origonal
accumulator and you aren't holding rest pressure, then you can safely
assume the accumulator is "dead". I do not know of ANY Delorean that
is running on an origonal accumulator and does not have a hot start
problem.
David Teitelbaum
vin 10757 



--- In dmcnews@xxxxxxxxxxxxxxx, "bitsyncmater" <david.mckeen@...> wrote:
>
> --- In dmcnews@xxxxxxxxxxxxxxx, Peter Lucas <lucas@> wrote:
> > 
> > 3) The "rest pressure hold time" spec in the shop manual is not  
> > adequate (at least not for a 25 year old engine).  Although my car  
> > always met the spec, it nonetheless exhibited problems starting when  
> > warm that were cured by a new accumulator.
>


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