RA GP125i, Maintenance Manual

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133
6
Check engine cylinder pressure to see if there is
insufficient cylinder pressure.
Exclude engine mechanical
failure (pay attention to
check whether engine valve
clearance is too small).
7
Check the ignition sequence and ignition timing of the
engine.
Inspect ignition timing
8
Check whether there is leakage, blockage or excessive
flow in fuel injector.
replace
9
Remove the coolant temperature sensor connector and
start the engine, observe whether the idle is stable
during the engine warm-up process.
Inspect the circuit or
replace the sensor
Idling
instability
during the
warm up
process
(5). starting normal, but idle speed too high.
General fault parts::1, throttle body and idle bypass air duct; 2, idle speed regulator; 3, coolant temperature sensor; 4,
Ignition timing.