Technical data

13773-001
71-00
Page 530 Nov 2000
High Cylinder Head Temperature Lean fuel/air mixture. See the Pilot’s Operating Hand-
book (POH) for correct leaning
procedure. (List of Publications)
Debris between cylinder fins. Clean thoroughly.
Incorrect engine timing. Adjust engine timing in accor-
dance with IO-550 Maintenance
Manual Chapter 12.” (Refer to
TCM Model IO-550 Overhaul Man-
ual)
Exhaust system gas leakage. Locate and correct in accordance
with the Pilot’s Operating Hand-
book (POH) instructions. (List of
Publications)
Exhaust valve leaking. Repair cylinder. See IO-550 Main-
tenance Manual Chapter 19, “Cyl-
inder Assembly Maintenance.”
(Refer to Model IO-550 Mainte-
nance Manual)
Baffle seals leaking or misposi-
tioned.
Repair or replace baffle seals.
Oil Leaks At front of engine, damaged crank-
shaft oil seal.
Replace crankshaft oil seal.
Around plugs, fittings and gaskets
due to looseness or damage.
Torque or replace.
Low Compression Piston rings excessively worn. Inspect, repair or replace cylinder.
Replace piston rings.
Valve faces and seats worn. Inspect, repair or replace cylinder.
Replace any worn parts.
Excessively worn cylinder walls. Replace cylinder & piston rings.
Engine Will Not Stop At Idle Cutoff Fuel manifold valve not seating
properly.
Repair or replace fuel manifold
valve.
Climbing to Altitude, Fuel Flow
Fluctuates
Fuel Vaporization. Operate fuel boost pump in accor-
dance with the Pilot’s Operating
Handbook (POH). (List of Publica-
tions)
TROUBLE PROBABLE CAUSE REMEDY