GxT Ferret 63 DIAGNOSTIC ENGINE ANALYZER - Manual (Page 9)

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Press MESSAGE when "msg" appears in the middle of
the display. This means a diagnostic check detects an
out of limit condition. Repeated presses of MESSAGE
will step through all the diagnostic messages and finally
back to the test. Messages may appear intermittently if
the condition is on the threshold of being a problem.
Messages suggest causes of problems, but do not
prove the suggested item is bad.
PAPER ADVANCE feeds 2 lines of paper for each
press.
PRINT DISPLAY prints what is on the display.
PRINT AUTOTEST prints test reports and is the Auto-
Test entry key. The Auto-Test will run all of the engine
dynamics tests in an automatic sequence. At the con-
clusion of the data report, you can also print the visual
inspection checklist. See pages 28-29.
ENGINE DYNAMICS TEST KEYS
These keys measure engine power cycle functions to
find causes of rough running. “PER CYLINDER” tests
store the gathered data in memory for after-test review
and printout. This permits seeing trend and cylinder dif-
ferences in the engine data.
The sequenced tests in the next column have pauses to
display instructions. Press START for the next step after
an instruction has been completed.
IGNITION PRIMARY is used to find bad ignition coils and
modules using the measurements of Oscillations, Ignition
Coil Energy, Dwell, and Driver Voltage. Use the Dwell
and Timing Variation tests to find loose timing chains,
worn distributor shafts and bearings. See page 14.
SPARK BURN easily finds defects with spark plugs,
sparkplug wires, distributor cap, and rotor. It measures
the Minimum, Average, and Maximum Spark Burn Time
for each cylinder. Spark Slope is measured to indicate
a lean or rich fuel mixture. A Burn Time Range bar graph
is produced with the printed report. See pages 16-17.
CRANKING ANALYSIS has two test sequences to mea-
sure Relative Compression, Cranking Volts, Cranking
Amps, Cranking RPM, Alternator Amps, and the CCA of
the battery. The Compression test finds cylinders with
low relative compression, and shows it on the printout
bar graph. See pages 20-23.
POWER BALANCE performs an Automatic or Manual
Power Balance test to locate low power cylinders. Each
spark plug is turned off one at a time and the RPM drop
is measured. The greater the drop in RPM, the stronger
the cylinder. Cylinders with a small drop should be tested
further to determine the problem. A Power Balance bar
graph is produced with the printed report. See page
18.
Ignition suppression is used in CRANKING ANALYSIS
and POWER BALANCE. The analyzer can suppress the
usual inductive discharge distributor ignition, but will not
work on capacitive discharge and multicoil ignitions. A
compatibility check is done by the analyzer before it will
apply suppression. If the check finds it incompatible, the
user will be notified to manually disable either the ignition
or fuel system.
SENSOR
TEST
02 TPS
SETUP AMP ZERO SELECT MESSAGE
PRINT
DISPLAY
PRINT
AUTOTEST
CHARGING
STARTING
AMPS VOLTS
IGNITION
PRIMARY
COIL MODULE
DWELL VARIATION
AUXILIARY AUXILIARY PER CYLINDER
CRANKING
ANALYSIS
COMPRESSION
BAT. STARTER ALT.
POWER
BALANCE
% RPM DROP
AUTO MANUAL
PER CYLINDER
SPARK
BURN
SECONDARY
MSEC SLOPE
PER CYLINDER
HARD
START
IGNITION VOLTS
AUXILIARY
FUEL
INJECTION
MSEC, % DUTY, HZ
AUXILIARY
START
PAPER
ADVANCE
SENSOR
TEST
02 TPS
SETUP AMP ZERO SELECT MESSAGE
PRINT
DISPLAY
PRINT
AUTOTEST
CHARGING
STARTING
AMPS VOLTS
IGNITION
PRIMARY
COIL MODULE
DWELL VARIATION
AUXILIARY AUXILIARY PER CYLINDER
CRANKING
ANALYSIS
COMPRESSION
BAT. STARTER ALT.
POWER
BALANCE
% RPM DROP
AUTO MANUAL
PER CYLINDER
SPARK
BURN
SECONDARY
MSEC SLOPE
PER CYLINDER
HARD
START
IGNITION VOLTS
AUXILIARY
FUEL
INJECTION
MSEC, % DUTY, HZ
AUXILIARY
START
PAPER
ADVANCE