Cessna 188 Series Service Manual page 219

MODEL 188 & T188 SERIES SERVICE MANUAL
11B-10. TROUBLE SHOOTING (Cont).
TROUBLE PROBABLE CAUSE REMEDY
ENGINE STARTS BUT DIES, OR Induction air leakage. Correct cause of air leakage.
WILL NOT IDLE PROPERLY
(CONT). Clogged fuel screen in fuel Remove and clean.
Replace
control unit or defective unit. defective unit.
Clogged fuel screen in fuel mani-
Remove and clean. Replace
fold valve or defective valve, defective valve.
Restricted fuel injection lines Remove, clean lines and nozzles.
or discharge nozzles. Replace defective units.
Defective engine-driven fuel Install and calibrate new pump.
pump.
Vaporized fuel in system. Refer to Information Manual.
(Most likely to occur in hot
weather with a hot engine. )
Obstructed air intake. Remove obstruction; service
air filter, if necessary.
Discharge nozzle air vent Check for bent lines or loose con-
manifolding restricted or nections.
Tighten loose connec-
defective.
tions. Remove restrictions and
replace defective components.
Defective engine.
Check compression and listen for
unusal engine noises. Check oil
filter for excessive metal. Repair
engine as required.
ENGINE HAS POOR ACCEL- Idle mixture too lean.
Refer to paragraph 11B-39.
ERATION. RUNS ROUGHLY
AT SPEEDS ABOVE IDLE OR Propeller control in high pitch Use low pitch (high rpm) position
LACKS POWER. (low rpm) position. for all ground operations.
Incorrect fuel-air mixture. Replace worn elements of
worn control linkage or control linkage. Service
restricted air filter. air filter.
Defective ignition system. Refer to paragraph 11-61.
Malfunctioning turbocharger.
Check operation, listen for unusual
noise. Tighten loose connections.
Improper fuel-air mixture. Check intake manifold connections
for leaks. Tighten loose connec-
tions.
Check fuel controls and link-
age for setting and adjustment.
11B-5