WMOTO RT3 S - Page 24

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Common
faults
Classication Possible causes Troubleshooting method
T h e w h o l e
veh i cle c a n
not start
Ele ctr ica l
equipment
Poor contact or burnt out of the fuse Check and replace the fuse
Damaged oil pump relay Check and replace the fuse relay box
High idle
speed or
unstable idle
speed
Inta k e a n d
exhaust
Leakage in the intake system causes
lean air-fuel ratio and unstable speed
Check whether there is air leakage at the installation position of
fuel injector, the installation surface of intake pipe and engine,
and the installation connection between throttle body assembly
and intake pipe
The throttle cable is too tight and does
not return to zero, and the leakage of
the valve body is too large
Check and adjust the tightness of throttle cable or replace the
valve body
The channel beside the valve body
seriously blocked by carbon deposit
Clean up carbon accumulation
High idle
speed or
unstable idle
speed
EFI
Step loss of step motor
Re initialize to reset the stepping motor, so as to eliminate the
step loss of the stepping motor
Damaged step motor Replace the step motor
Throttle position sensor fault Check or replace the throttle position sensor
Insucient oil pump pressure Check or replace the oil pump
High idle
speed or
unstable idle
speed
Engine
Poor ignition of spark plug
Check the connector or replace the spark plug and spark plug cap
Poor contact
between spark plug cap
and spark plug
Engine valve clearance is too small Check the engine valve clearance
Excessive
refueling,
shaking and
ameout
Engine
Poor ignition of spark plug Check the connector or replace the spark plug or spark plug cap
Poor contact between spark plug cap
and spark plug
Valve clearance is too small or uneven Check and adjust valve clearance
Cylinder pulling or leakage on the valve
sealing
Check and replace the engine
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