Cessna 188 Series Service Manual page 221

MODEL 188 & T188 SERIES SERVICE MANUAL
11B-10.
TROUBLE SHOOTING (Cont).
TROUBLE PROBABLE CAUSE REMEDY
ENGINE LACKS POWER. RE- Defective ignition system. Inspect spark plugs for fouled
DUCTION IN MAXIMUM electrodes, heavy carbon de-
MANIFOLD PRESSURE OR posits, erosion of electrodes,
CRITICAL ALTITUDE (CONT). improperly adjusted electrode
gaps and cracked porcelains.
Test plugs for regular firing
under pressure. Replace dam-
aged or misfiring plugs.
Improperly adjusted wastegate.
Refer to paragraph 11B-55.
Loose or damaged exhaust Inspect entire exhaust system to
system. turbocharger for cracks and
leaking connections. Tighten
connections and replace damaged
parts.
Loose or damaged manifolding. Inspect entire manifolding system
for possible leakage at connections.
Replace damaged components,
tighten all connections and clamps.
Fuel discharge nozzle defective. Inspect fuel discharge nozzle vent
manifolding for leaking connections.
Tighten and repair as required.
-
Check for restricted nozzles and'
lines and clean and replace as
necessary.
Malfunctioning turoocharger. Check for unusual noise in turbo-
charger.
If malfunction is sus-
pected, remove exhaust and/or
air inlet connections and check ro-
tor assembly, for possible rubbing
in housing, damaged rotor blades
or defective bearings. Replace
turbocharger if damage is noted.
BLACK SMOKE EXHAUST. Turbo coking, oil forced through Clean or change turbocharger.
seal of turbine housing.
Oil Check Valve Replace Valve
Defective
HIGH CYLINDER HEAD
Defective cylinder head tempera- Refer to Section 15.
TEMPERATURE. lure indicating system.
Engine baffles loose, bent or Install baffles properly.
Repair or
missing. replace if defective.
Dirt accumulated on cylinder Clean thoroughly.
cooling fins.
Incorrect grade of fuel. Drain and refill with proper fuel.
118-7