
49
Air
Lack of Idle
intake air
●
●
Idle bypass intake tube
jam
,
rinse it with
carburetor
cleansing
agent.
Loose of inlet
pipe screw
●
Fuel mixture becomes
too lean.
Leakage
of
exhaust pipe
or O2 sensor
joint
●
Fuel
consumption
increases
Air comes into exhaust
pipe,
oxygen
sensor
signal is disturbed, fuel
mixture is revised too
rich
Fuel
Fuel
pump
fault
●
●
Lack
of
fuel,
poor
atomization
Negative
pressure
driving pump
fault
●
●
Suddenly powerless,
and hard to start
again
Poor cooling effect on
fuel pump. Gas block in
the fuel pipe
Summary of Contents for PST300-20
Page 9: ...6 PARTS LOCATION PST300C PST300R ...
Page 10: ...7 PST300C ...
Page 11: ...8 PST300C ...
Page 59: ...56 ...
Page 61: ...58 Attachment 2 Pin assignment diagram of ECU socket viewed in a direction facing the socket ...