Doosan D20S-5 Operation & Maintenance Manual page 99

Problem
Excessive Fuel
Consumption/LP
G Exhaust Smell
Probable Cause
Air/Fuel Mixer malfunction
Air filter clogged
Vacuum leak
Pressure regulator malfunction/fuel
pressure too high
Faulty FTV
Weak ignition and/or spark control
Incorrect air/fuel control
Exhaust system leaks
Oxygen sensor failure
Corrective Action
Check mixer
See Engine Service Manual
Check air filter
Clean/replace as required
Check system
regulator to FTV and mixer
Repair/replace as necessary
Test pressure regulator operation
See Engine Service Manual
Check FTV
obstructions
See
operation
Repair and/or replace as necessary
See Advanced Diagnostics
See Advanced Diagnostics
Repair exhaust system
Replace as necessary
See Advanced Diagnostics
-97-
Operation Section
vacuum hoses
for housing cracks
Advanced Diagnostics FTV
from
or