[DML] Re: Fuel pressure/accumulator question
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[DML] Re: Fuel pressure/accumulator question



This answers my question perfectly.  I believe that my accumulator 
is actually hemorrhaging out of the return line. I discovered this 
while I was pumping gas out of my tank (and collecting it at the 
filter) to drain it and clean it out. While the pump was running 
during this procedure the return line would theoretically be cut off 
however I was seeing quite a bit of fuel come out of the return 
line!  I did not think much of it until I noticed that my fuel 
system would take between 10 and 30 seconds to reach full pressure. 
(possibly accounting for my starting problem) One look at the fuel 
flow diagram confirmed my suspicions. 

I will clamp off the accumulator return line and see if my car 
pressures up faster. Thanks for the direct answer!

Nathan
2277

--- In dmcnews@xxxxxxxxxxxxxxx, "Dave Swingle" <swingle@...> wrote:
>
> Good analysis. 
> 
> There are a couple of easy tests for the accumulator - 
> 
> Clamp off (vice grips) the one hose that comes off the end of the 
> accumulator by itself. This is the low side relief. If it is 
leaking 
> badly internally, this will fix the pressure problem. You will 
still 
> have a hot start issue, but the fuel pump pressure will not be 
able 
> to bleed off back to the tank and should build up quicker. 
> 
> An alternative or second test to this is to disconnect this same 
hose 
> from the accumulator, and then clamp it off. Put a short extension 
> hose on the accumulator and direct it into a jar. Jump the RPM 
relay 
> to activate the fuel pump. If you get more than a 1/4 cup or so of 
> fuel out of the accumulator (you should expect some as it 
> compresses), it's leaking internally. 
> 
> Dave Swingle
> 









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