Suzuki SY413 Service Manual page 2597

Condition
Engine hesitates
D Spark plug faulty or plug gap as out of
(Momentary lack of re-
sponse as the acceler-
ator is depressed. Can
occur at all vehicle
D Clogged fuel filter, hose or pipe
speeds. Usually most
severe when first try-
ing to make the ve-
hicle move, as from a
stop sign.)
D Malfunctioning EGR valve
Surges
D Defective spark plug (excess carbon de-
(Engine power varia-
tion under steady
throttle or cruise.
Feels like the vehicle
speeds up and down
D Clogged fuel filter
with no change in the
D Kinky or damaged fuel hose and lines
accelerator pedal.)
D Malfunctioning EGR valve
Excessive detona-
tion
(The engine makes
D Faulty spark plug
sharp metallic knocks
that change with
throttle opening.
D Clogged fuel filter and fuel lines
Sounds like pop corn
popping.)
D Excessive combustion chamber depos-
D Malfunctioning EGR valve
Possible Cause
Ignition system out of order.
adjustment
Fuel system out of order.
Engine overheating
Electronic Fuel Injection system out of
order.
Low compression
Others
Ignition system out of order.
posits, improper gap, and burned elec-
trodes, etc.)
Fuel system out of order.
Electronic Fuel Injection system out of
order.
Others
Engine overheating
Ignition system out of order.
Fuel system out of order.
Electronic Fuel Injection system out of
order.
Others
its
ENGINE (ENGINE WITHOUT WU TWC) 6-21
Referring Item
Spark plugs in Section 6F2.
Diagnostic Flow Chart B-3 in Section 6E3.
Refer to "Overheating" section.
Trouble diagnosis in Section 6E3.
Previously outlined.
EGR system inspection in Section 6E3.
Spark plugs in Section 6F2.
Diagnostic Flow Chart B-3 in Section 6E3.
Diagnostic Flow Chart B-3 in Section 6E3.
Trouble diagnosis in Section 6E3.
EGR system inspection in Section 6E3.
Refer to "Overheating" section.
Spark plugs in Section 6F2.
Diagnostic Flow Chart B-3 in Section 6E3.
Trouble diagnosis in Section 6E3.
Piston and cylinder head cleaning in Sec-
tion 6A3.
EGR system inspection in Section 6E3.