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1. 02:13 PM - IO 720 fuel pump and pressure (Philip Guziec)
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| Subject: | IO 720 fuel pump and pressure |
Cross posted to fish for IO 720 experience.
Well, my new bird, which apparently the FAA designates as a SW50,is safely snugged
into a heated community hangar at UGN, and I'm eagerly looking forward to
transition traning. However, on the delivery flight,teh rightengine (IO 720) showed
a fuel pressure of 16 psi when running on the engine driven fuel pump which
was recently replaced (for the second time). After the replacement, the fuel
pressure tested fine, but on the short flight to UGN it showed 16 vs a 22 to
25 psi targetrange. The boost pump works in the 22-25 range.
The pump is adjustable, so the pressure can be raised. However, is this likely
the result of a break-in drift in fuel pressure or should I be concerned that
the pump will soon fail? I don't recall a fuel pressure drift after the install
of a new fuel pump on my IO 360, and I'm assuming this is of a similar design.
Thoughts?
Phil
SW50
M20E Turbo
UGN
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