TROUBLESHOOTING 21
155
Faults Possible cause Action
Engine does not speed up Faulty ignition – Ignition coil - check the primary wind-
ing.
– Check the spark plug connector.
– Check the stator winding of the alter-
nator.
Ambient pressure is incorrectly
stored
– Program ambient air pressure.
( p. 138)
Engine has too little power Air filter very dirty – Clean the air filter and air filter box.
( p. 81)
Fuel filter is very dirty – Change the fuel filter.
Fuel screen is very dirty – Change the fuel screen. ( p. 141)
Malfunction in the electronic
fuel injection
– Check wiring for damage and electrical
plug-in connectors for corrosion and
damage.
– Read out the fault memory using the
KTM diagnostics tool.
Fuel supply interrupted – Check the fuel tank breather.
Exhaust system leaky,
deformed or too little glass
fiber yarn filling in main
silencer
– Check exhaust system for damage.
– Change the glass fiber yarn filling of
the main silencer. ( p. 83)
Faulty ignition – Ignition coil - check the primary wind-
ing.
– Check the spark plug connector.
– Check the stator winding of the alter-
nator.
Diaphragm or reed valve hous-
ing damaged
– Check the diaphragm and reed valve
housing.
Ambient pressure is incorrectly
stored
– Program ambient air pressure.
( p. 138)
The engine dies during the trip Lack of fuel – Refuel. ( p. 48)
The engine takes in false air – Check that the intake flange is firmly
seated.
The connector or ignition coil is
loose or oxidized
– Clean the connector and treat it with
contact spray.
Ambient pressure is incorrectly
stored
– Program ambient air pressure.
( p. 138)
Engine overheats Too little coolant in cooling sys-
tem
– Check the cooling system for leakage.
– Check the coolant level. ( p. 130)
Too little air stream – Switch off engine when stationary.
Radiator fins very dirty – Clean the radiator fins.
Foam formation in cooling sys-
tem
– Drain the coolant. ( p. 130)
– Refill with coolant. ( p. 131)
Damaged cylinder head or
cylinder head gasket
– Check the cylinder head and cylinder
head gasket.
Bent radiator hose – Change the radiator hose.
Thermostat defective – Check the thermostat.
Guideline
Opening temperature: 70 °C (158 °F)
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