Piper Aircraft Corporation Malibu Mirage PA-46-350P, Airplane Maintenance Manual

Page: 1367 / 1956

PAGE 7
Feb 28/07 7D17
71-00-00
PIPER AIRCRAFT, INC.
PA-46-350P, MALIBU MIRAGE
MAINTENANCE MANUAL
CHART 1 (Sheet 6 of 6)
TROUBLESHOOTING ENGINE
Trouble Cause Remedy
Excessive oil consumption. Low grade of oil. Fill sump with oil
conforming to
specifications.
Failing or failed bearings. Check sump for metal
particles.
Piston rings worn. Install new rings.
Incorrect installation of Install new rings.
piston rings.
Failure of rings to seat. Use mineral base oil. Climb
(New nitrided cylinders.) to cruise altitude at full
power and operate at 75%
cruise power setting until
oil consumption stabilizes.
High fuel flow indicated Plugged fuel injector Clean or replace nozzle.
on fuel gauge. nozzle.
3. Engine
A. Removal
WARNING: PLACE A TAIL STAND UNDER THE TAIL OF THE AIRPLANE BEFORE REMOVING
THE ENGINE.
NOTE: All hoses, lines, and wires should be tagged (identified) to facilitate installation. Open fuel,
oil, and vacuum lines and fittings should be covered to prevent contamination.
(1) Turn off all electrical switches in the cockpit and then disconnect the battery ground wire at the
battery.
(2) Move the fuel selector lever in the cockpit to OFF.
(3) Remove the engine cowling.
(4) Remove the propeller (refer to 61-10-00).
(5) Discharge the air conditioning system and disconnect the air conditioning compressor lines
(refer to 21-50-00).
(6) Disconnect the starter positive and ground leads at the starter. Remove the lead attachment
clamps.
(7) Disconnect the propeller governor control cable at the governor. Remove the cable attachment
clamps.
(8) Disconnect the heated air hose from the heat muff.
(9) Disconnect the throttle and mixture cables at the injector.
(10) Remove the turbocharger air inlet ducts from both turbochargers.