Troubleshooting Chart - Man E3268 LE212 Operating Instructions Manual

9.3 Troubleshooting chart

Fault
Engine does not start
Engine starts but does
not reach idle speed or
stalls
Engine does not start
or poorly starts in war­
med up condition
82
Possible cause
D Shutoff solenoid valve of gas supply
closed/does not open
D Zero pressure regulator of gas supply
not correctly set or faulty
D Air filter clogged
D Exhaust clogged
(exhaust back pressure too high)
D Electric circuit interrupted
D Battery dead
D Starter/solenoid switch faulty
D Ignition system control unit faulty
D Impulse sensor faulty
D Spark plugs faulty or worn
D Spark plug connectors wet
D Ignition timing incorrect
D Gas inlets in gas mixer (venturi pipe)
clogged/oiled
D Valves do not close or are stuck
D Crank assembly is externally blocked
D Engaging lever/bearing pin of engaging
lever broken
D Internal engine damage (piston seizure,
maybe due to incorrect oil type)
D Quality of gas does not meet the speci­
fications or is contaminated
D Throttle valve does not open/actuation
level sticks/actuator is de-energized or
faulty
D Air filter clogged
D Spark plug faulty
D Ignition cable faulty
D Ignition coil faulty
D Ignition timing incorrectly set
D Insufficient compression in cylinder or
more than 3-4 bar pressure difference
between the cylinders
Carefully read these Operating Instructions before starting any work!
This is especially valid for the chapter on General Safety Instructions
Remedy
D Set main switch to "on"
D Replace faulty fuses
D Repair any loose, corroded and
broken wires and contacts
D See information at "Starter"
D Clearance incorrectly set
D A faulty tank system can cause
oil to get into the pressure gas
system. Clean entire system.
D Remove objects that interfere
with the movement of the fan,
power output, alternator, etc.
D Remedy from manufacturer ser­
vice
D See "Fuels, Lubricants and Coo­
lants...."
D Remedy from manufacturer ser­
vice
D Remedy from manufacturer ser­
vice
and the safety instructions in each of the chapters.
Faults