For Your Safe Flight
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Continued:
Display
Symptom
Probable
Cause
Recommended
Action
Decrease in
EGT for one
cylinder
Intake valve not
opening fully; faulty
valve lifter.
Have valve lifter or
rocker arm
checked.
Increase in DIF
at low RPM
Low compression
(blow by) in cylinder
Check
compression.
EGT and CHT
not uniform
Normal for
carbureted
engines. Dirty fuel
injectors or fouled
plugs.
Check injectors
and plugs.
Decrease in
EGT for all
cylinders
Decreased
induction airflow.
Carb or induction
ice.
Check for change
in manifold
pressure.
Slow rise in
EGT. Low CHT
Burned exhaust
valve. CHT is low
due to low power
output.
Have compression
checked.
High CHT on
cylinders on
one side of
engine
Obstruction under
cowling.
Check for improper
installed baffling,
cowl flap
misalignment or
bird nests.
Continued: