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Hello Everyone,
I just thought I would update everyone on my Fuel
Flow issue.
About a month back I asked for advise about a
sudden lack of fuel flow.
Where I used to get 20-21gph on Take off I has
suddenly getting 12-14gph.
All run ups were normal but when applying full
power for takeoff I would not
get enough flow. When initiating the Electric
fuel pump everything turned to
normal.
Well this problem turned into quit the hunt to find
the issue.
To make a long story short I had disassembled and
reassembled the majority of
the fuel system from the:
Engine driven fuel pump
Throttle control unit
Manifold spider valve
Injectors and lines
gascolator
fuel flow meter
all fuel lines
tank vents
Electric fuel pump
What did it come down to??
A broken O-ring on the inlet side of the Electric
Fuel pump fitting.
Air was being sucked into the system. I
finally discovered it by putting a vaccum
on the fuel lines from the engine to the
tanks. When a vaccum could not be held
I traced it to the O-ring.
Four weeks of down time and
about 80hrs of work to find the .50 cent problem.
Of course I had to reset all my flows of which I
now get 24gph and 22psi on Takeoff.
Now I am still not using my Electric Boost for Take
Off. Should I or should I not???
What is the concensis of people in the
know.
Thanks to everyone whom gave me some
input.
Scott Keighan
L-IV IO-550G
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