It recently came to our attention
that the injectors fitted to 2005 Ford 5.4L engines in the
F-Series pick up trucks & expedition S.U.V.'s etc. have a high
"historical" failure rate (you only have to "Google" Ford 5.4L
injector failure to see how much of an issue it is!)
Having recently diagnosed & serviced a set of these injectors
made by Siemens Deka, we quickly discovered that this particular
injector was manufactured without the traditional 10 micron
filter screen inside?!
Anything smaller than 20 or 30 microns can "slip" through the
in-line or in-tank filter and find its way into the injector and
either causes intermittent misfire/rough idle or, at worst,
lodges between the needle & seat and floods the
cylinder/cylinders and can cause hydra-static lock and engine
damage.
Two bent con rods in our injector history case.
P.W.I. have sourced filter screens for this application and they
are available under ASNU part # 201 (24 in a pkg) @ 1.98 each.
Cheap insurance when servicing these troublesome injectors.
These injectors are also adjustable in terms of "Flow Rate"
calibration. Please
contact us for
further details on the specification and detailed instructions
on how to calibrate them if your test results vary by more than
+/- 3 %.