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The end result is a Delphi/CAV type Sedimenter without
a filter, but it does have a clear glass bowl to see any contamination.
Another very handy feature is the miniature ball valve and barb that’s
fitted to the outlet of the Nissan fuel filter to help bleed the system
and it's a handy point to fit a fuel pressure gauge for testing.
The pump that I chose to supply fuel to the Sedimenter is a Walbro FRD-11,
which can flow up to 210L/hour and lift fuel over 3meters. Instead of 4"Hg of vacuum, I
now have 1.5psi of fuel pressure to the Zexel Rotary injection pump at
idle. The
electric pump is “flow through” with a check valve (not a vane pump), so that if the
electric pump fails, the rotary pump can still pull fuel through it. This
should help to control water and debris from entering the engines fuel system
while supplying a steady flow of fuel under pressure to the rotary pump
and hopefully improve the rotary pumps durability and longevity.
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