Cessna T188C - Page 220

MODEL 188 & T188 SERIES SERVICE MANUAL
11B-10. TROUBLE SHOOTING (Cont).
TROUBLE PROBABLE CAUSE REMEDY
ENGINE HAS POOR ACCEL- Spark plugs fouled or defective. Remove, clean, inspect and regap.
ERATION. RUNS ROUGHLY
Use new gaskets.
Check cables to
AT SPEEDS ABOVE IDLE persistently fouled plugs. Replace
OR LACKS POWER (CONT).
if defective.
Fuel pump
pressure improperly
Refer to
paragraph 11B-55.
adjusted.
Restriction in fuel injection Clean out restriction. Replace
system.
defective
items.
Propeller
out of balance.
Check and
balance propeller.
Defective engine.
Check compression,
check oil
filter for excessive metal.
Listen for unusual noises.
Repair engine as required.
Exhaust
system
leakage.
Refer to
paragraph
11A-60.
Turbocharger
wheels
rubbing.
Replace turbocharger.
Improperly
adjusted or defective
Refer to
paragraph 11B-55.
waste -gate
Leak in
turbocharger discharge
Correct
cause of leaks. Repair
pressure
system.
or replace
damaged parts.
Overboost
Valve
Defective
Replace
Valve
POOR IDLE CUT-OFF. Mixture control linkage im- Refer to Figure 11A-5.
properly rigged.
Defective
or dirty fuel manifold
Remove
and clean manifold
valve. valve.
Fuel contamination. Drain all fuel and flush out fuel
system. Clean all screens. fuel
strainers, fuel manifold valves.
nozzles and fuel lines.
Defective mixture control Replace fuel pump.
valve in fuel pump.
ENGINE
LACKS POWER.
RE-
Incorrectly adjusted
throttle
Check
movement of
linkage by mov-
DUCTION
IN MAXIMUM
control, "sticky
linkage or
ing control
through range
of travel.
MANIFOLD
PRESSURE
OR dirty
air filler.
Make proper
adjustments
and re-
CRITICAL
ALTITUDE.
place worn components.
Service
air
filter.
Overboost
Valve
Defectve
Replace
Valve
11B-6