Troubleshooting - New Holland LS140 Workshop Manual

TROUBLESHOOTING

PROBLEM
Engine will crank but does not start Faulty key switch
Engine will not crank or start
Irregular running of the engine
SECTION 10 - ENGINE
CAUSE
Blown 5-amp electronic ignition
fuse (cab fuse panel)
Fuel solenoid not operating
Battery insufficiently charged or
completely discharged
Lack of fuel
Air mixed in the fuel system
Clogged fuel filter
Irregular and faulty fuel supply
(electric fuel pump)
Irregular and faulty fuel supply
(injection pump trouble)
Glow plug not heating
Improper viscosity of the lubricating
oil
Clogged air cleaner
Low compression
Seat belt not fastened
Faulty key switch
Battery insufficiently charged or
complete discharged
Blown 5-amp electronic battery
fuse (engine fuse panel)
Blown 15-amp key main fuse
(engine fuse panel)
Open in W/O (white-orange) wire
between the seat/seat
connector and start interlock relay
Faulty start interlock relay
Air mixed in the fuel system
Uneven fuel injection (faulty fuel
injection pump)
Clogged fuel filter
Defective governor
Engine itself defective
10-9
Copyright © New Holland
CORRECTION
Correct the connection and/or
replace switch
Replace fuse
Check solenoid for battery voltage
and correct
Charge or replace battery
Fill fuel tank
Bleed the air
Replace
Check power supply and/or replace
pump
Repair in an authorized service
shop
Failure of the glow plug; replace
Inspect and replace
Clean or replace
Repair in a service shop
Buckle seat belt
Correct the connection and/or
replace switch
Charge or replace battery
Replace fuse
Replace fuse
Check and repair as required
belt
Check and repair as required
Bleed the air from the system
Repair at authorized shop
Replace
Check and correct
Repair in a service shop