KYMCO MYROAD 700i Service Manual page 29

1
. GENERAL INFORMATION
POOR PERFORMANCE (ESPECIALLY AT IDLE AND LOW SPEEDS)
Inspection/Adjustment
Connect the diagnostic
tool, then check EMS and
correct problems.
Check ignition timing
Check fuel injector for
clogging
Check intake manifold
for air leaks
Remove spark plug and
install it into spark plug
cap to test spark by
connecting it to engine
ground
Check throttle body
Symptom
Incorrect timing
Correct timing
Not Clogged
No air leak
Weak or
Good spark
intermittent spark
Good
Probable Cause
Faulty ignition coil
Faulty CPS
Faulty ECU
Clogged
Fouled fuel injector
Faulty fuel pump
Damage insulator rubber
Throttle body not securely
Air leaks
tighten
Faulty intake manifold
O-ring
Faulty CPS
Faulty ignition coil
Broken or shorted
high tension wire
Faulty spark plug
Fouled throttle body
Faulty
Faulty TPI reset
MYROAD 700i
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