Royal Enfield Bullet Classic EFI Service Manual page 167

S No Symptom
E Ignition related
4 Vehicle Starts but Switches Crank sensor loose connections/
off
5 High fuel consumption /
Uneven Idling / Poor Pick up / broken throttle Cables
Smoky Exhaust / Engine
runs badly
6 Battery discharging
frequently
7 Battery not Charging
TROUBLE SHOOTING
Possible Cause
Spark plug Fouled
Spark plug cap shorting
Ignition coil wire loose connection Check for proper wire connection.
or broken.
Faulty HT coil power relay.
Faulty H T coil
No output from Magneto
faulty
Roll over Sensor Loose
connections /
Injector holes clogged
Loose inlet manifold / Leak in
inlet manifold
Loose connections or problem in
manifold pressure sensor
Stuck butterfly in throttle body /
Loose connections or problem in
throttle position Sensor.
Loose connections or problem in
Lambda (O
) sensor circuit.
2
Defective temperature sensor.
Poor Output from charging coils
in magneto
Poor charging by RR Unit
Weak battery cells
Charging circuit fuse Blown
Low or weak electrolyte.
Cells weak
No output from RR Unit. Poor
connection/RR unit failed
No output from magneto
burnt coils in magneto unit
Remedy
Replace spark plug
Replace spark plug cap
Replace damaged wire connections
Check power relay resistance / wire
connections. Replace if faulty.
Replace H T coil
Check pulsar coil / Magneto output
connections
Check Crank sensor & its connections
Check Roll over sensor & its
connections
Replace injector.
Check & correct
Check continuity and correct
Check & correct
Check continuity and correct
Check & correct
Check & correct
Check & correct
Check Output voltage
(10V -16v AC @ 1000rpm)
Check RR unit & Replace
Replace the battery.
Check wiring harness connections
& replace fuse
Check battery & correct
Check battery & replace
Check & correct / replace RR unit
Check for loose connections /
06-14