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Operation Section
Operation Section
Problem
Problem
Probable
Probable Cause
Cause
Corrective
Corrective Action
Action
Air/Fuel
Air/Fuel Mixer
Mixer malfunction
malfunction
Check
Check mixer
mixer
See Engine Service Manual
See Engine Service Manual
Air
Air filter
filter clogged
clogged
Check
Check air
air filter
filter
Clean/replace as required
Clean/replace as required
Vacuum
Vacuum leak
leak
Check
Check
system
system
vacuum
vacuum
hoses
hoses
from
from
regulator to FTV and mixer
regulator to FTV and mixer
Repair/replace as necessary
Repair/replace as necessary
Pressure regulator malfunction/fuel
Pressure regulator malfunction/fuel
pressure too high
pressure too high
Test pressure regulator operation
Test pressure regulator operation
See Engine Service Manual
See Engine Service Manual
Faulty
Faulty FTV
FTV
Check
Check FTV
FTV for
for housing
housing
cracks
cracks or
or
obstructions
obstructions
See
See
Advanced
Advanced Diagnostics
Diagnostics FTV
FTV
operation
operation
Repair and/or replace as
Repair and/or replace as necessary
necessary
Weak ignition and/or spark control
Weak ignition and/or spark control
See Advanced Diagnostics
See Advanced Diagnostics
Incorrect air/fuel control
Incorrect air/fuel control
See Advanced Diagnostics
See Advanced Diagnostics
Exhaust
Exhaust system
system leaks
leaks
Repair
Repair exhaust
exhaust system
system
Excessive
Fuel
Excessive
Fuel
Consumption/LP
Consumption/LP
G Exhaust Smell
G Exhaust Smell
Oxygen
Oxygen sensor
sensor failure
failure
Replace
Replace as
as necessary
necessary
See Advanced Diagnostics
See Advanced Diagnostics
Summary of Contents for G20E-5
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