Technical data

13773-001
71-00
Page 4 30 Nov 2000
Continuous Fouling Of Spark
Plugs
Piston rings excessively worn or
broken Piston rings are not
seated.
Replace rings. Replace cylinder if
damaged Hone cylinder walls,
replace rings.
Engine Runs Rough At High
Speed
Loose mounting bolts or damaged
mount pads.
Torque mounting bolts. Replace
mount pads. (Refer to 71-20)
Plugged fuel nozzle jet. Clean. Replace nozzle if obstruc-
tion cannot be cleared by solvent
action. Never use wire or any
other object to clear nozzle jet.
Propeller out of balance. Remove and repair in accordance
with Pilot’s Operating Handbook
(POH) instructions. (List of Publi-
cations)
Ignition system malfunction. See Ignition “Troubleshooting”.
(Refer to 74-00)
Continuous Missing At High
Speed
Broken valve spring. Inspect, repair or replace cylinder.
Replace valve springs.
Plugged fuel nozzle jet. Clean. Replace nozzle if obstruc-
tion cannot be cleared by solvent
action.
Burned or warped valve. Inspect, repair or replace cylinder.
Replace any burned, warped or
worn exhaust valves.
Hydraulic tappet dirty or worn. Remove and replace.
Sluggish Operation And Low
Power
Throttle not full open. Check and adjust linkage. See
Rigging of Mixture and Throttle
Controls in the applicable Pilot’s
Operating Handbook (POH)
instructions. (List of Publications)
Restrictions in air intake pas-
sages.
Inspect air intake and remove
restrictions.
Ignition system malfunction. See “Ignition Troubleshooting”.
(Refer to 74-00)
Fuel injection system maladjusted. See “Engine Fuel System Trouble-
shooting.” (Refer to 73-00)
TROUBLE PROBABLE CAUSE REMEDY