Fault phenomenon—Instable idle speed with deceleration and flameout
a) Checking valve clearance;
b) Check whether idle speed bypass hole and throttle
body are too dirt.
Fault phenomenon—Insufficient power of deceleration
a) Check whether the parameters are normal at idle
speed and high idle speed;
b) Check fuel quantity in the fuel tank and fuel filter;
c) Check whether exhaust system is blocked, for
example: whether three-way catalytic converter is
blocked by burning oil or damage;
d) Check fuel line pressure and nozzle;
e) Check whether fault lamp is on, and whether normal
ignition can be conducted for only one cylinder.
Fault phenomenon—Slight burning phenomenon
Check whether the spark plug clearance meets
specification of 0.7-0.8mm
Fault phenomenon—Fault lamp is on, but fault code is inconsistent with fault
It may be caused due to instable connection
of system grounding wire, reconnect the grounding
wire,
disconnect the power wire of storage battery for 3
minutes and then connect it and start engine.
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