Hi group,
My hat is off to all the engine folks here, Walter, George, Gary, Craig,
and others. Your discussions have been great.
As some of you may remember I have had several ongoing issues with my
engine in my L4P with 300 flight hours on a factory new engine built in Feb.
2001.
The latest is a Lifter disintegrating and it looks like it took the Cam
with it. Currently the engine is being remove for disassembly. You may remember
that about one month ago I changed the oil and cut open the filter to discover
large hard chips in the filter, but the Oil analysis showed a Perfect reading in
all categories. The chips were sent to Lycon and they thought it was Gears
and so I grounded the airplane until TCM had looked at the chips. TCM came back
with it being identified as the Lifters. They cleared it for a ferry
flight and I was the chosen pilot. At this point I had a mechanic that had
removed the Alternator and both Mags. to borescope the gears and found nothing,
so we inspected the Mags and found water in the right Mag. They both were given
the 500 hr inspection and points replaced. This is after the first right
Mag. was destroyed at 170 hrs from water in it, and now with 130 hrs on a new
right Mag it is showing moisture again. Then he reinstalled the Alt. and both
mags and when we started the engine there was NO oil pressure. After removing
the oil pressure relief valve and cleaning with a magnet, getting several chips
of steel out, the restart showed lots of oil pressure. I also replaced the
moisture filter in the pressure line going to the Mags.
Now to get ready for the ferry flight. I was reading all the LML postings
about safety of flight and Shannon taking off with a known engine problem. I
needed to get the airplane from Sedona, AZ. to Visalia, CA.,about a 2 hr flight,
to take it to Lycon for the Lifter Inspection. They would remove the
pushrod tubes and lifters. So I decided to make a test flight with
low fuel and calm winds over the airport which I did and climbed to 11K for 20
min. and landed. Everything checked out fine so I refueled and decided to fly a
long route at 16.5K VFR so I could go over as many airports as possible without
the IFR issues and a shorter route. The winds were 45 kts in my face at that
altitude and the briefer suggested a lower altitude, I explained my
purpose.
All I can say is I was alone and very concerned. I used the men's room
before and after the flight and the red bottle twice in-flight for a 2 hrs
flight. Tells you something. There was nothing inside the airplane
to indicate that anything was wrong and the flight went uneventful. Sorry
if I threatened everyone's Insurance concerns.
After the inspection it looked like the Cam lobe was also pitted so they
are now removing the engine. I'm not sure what to do yet but I need to find out
if TCM is going to stand behind any of this. Below is a brief history of my
engine.
My history with this engine is very spotted;
At 0 hrs. the fuel control lever would not move smoothly so the fuel
controller was replaced before engine start up. In service date was Dec.
2001.
At 110 hrs the first Alternator flange broke and caused and oil leak.
At 170 hrs a Right Mag. failed on the preflight runup and was eaten up from
moisture. Replaced with new Mag.
At 215 hrs the Second Alternator flange broke. And the
engine failed the Topcare compression test on 3 cylinders. Checking all six
exhaust values showed out of spec. valve stems and undersized guides. TCM
replaced all the cylinders.
Now at 298 hrs the Right Mag. had moisture in it and both Mags were given
the 500 hr inspection and put back in service for the Ferry flight to Visalia.
Hardened iron chips were found in the filter and determined by TCM to be
Lifters. This led us to the current lifter inspection. I had previously
paid to remove the Mags and Alternator, borescope the gears, overhaul the Mags
and reinstall for the ferry flight.
I have serious concerns about what the chips did to the Oil Pump, Gears,
Bearings, and maybe Turbos?
Must be pilot error? Disappointed,
Jim Hergert
N6XE (An Sexy)