
ROYAL ENFIELD VEHICLE SERVICE MANUAL - EURO IV
291
A. Ignition related
Battery voltage low
Recharge/ replace battery
Suppressor cap/ H T lead loose
Check & correct as required
Suppressor cap/ H T lead defective Check & correct as required
Spark plug fouled / wet
Replace / clean spark plug
Electrode gap too less/excessive
Check and correct electrode gap
Spark plug wrong specifications
Replace with correct spark plug
Ignition coil defective
Check & replace
Pulsar coil / Magneto defective
Check & replace
Adulterated / Bad fuel
Clean fuel tank.
Fill with fresh fuel
Air vent holes in Fuel tank cap
Check & clean air vents
B. Fuel / Induction related
partially blocked
Fuel flow partially blocked
Check & clean fuel tap / filter
Air filter dirty / clogged
Check & clean / replace
Pulse air valve pipe connections
Check & correct
loose / cracked
C. Compression related
Spark plug loose
Check & tighten to torque
Inlet / Exhaust tappets adjusted
Check & correct
wrongly
Cylinder head gasket blown
Check & correct
Cylinder head studs loose
Check & tighten to torque
Cylinder head seating area warped Check & replace
Cam shaft sticky rotation /seized
Check & correct
in cylinder head
Valve spring broken or weak
Check & replace
Valve not seating properly (stem
Check & replace
bent. Heavy carbon deposit on
seating surface)
Piston rings worn out/ broken /
Check & replace
stuck in ring groove
Cylinder / piston worn
Check & replace
Attribute
Probable Cause
Remedy
3. IDLING ERRATIC / ENGINE MISFIRING AT LOW RPM
KS MOTORCYCLES - http://ksmotorcycles.com